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Is your car a dual clutch gearbox? Will you buy a car equipped with a dual clutch gearbox?

In recent years, in order to get rid of the intellectual property rights and technical restrictions of AT gearbox and gearbox, some car companies have achieved overtaking in corners of automatic gearbox. Coupled with the advantages of direct shifting, small power loss, light weight and low fuel consumption of dual-clutch gearbox, the majority of car companies have increased the research and development and production of DCT dual-clutch gearbox, and achieved remarkable results, and a large number of dual-clutch gearboxes with excellent technology and stable performance have emerged.

The dual clutch automatic transmission is based on the manual gearbox. Different from the manual gearbox, two clutches in the dual clutch are connected with two input shafts, and the gear shifting and clutch operation are realized automatically through the mechatronic module integrating electronic and hydraulic components.

Powershift can be divided into dry type and wet type, and the main difference is the different cooling methods. Dry powershift is cooled by air, while wet dual clutch is cooled by oil. The cooling effect of oil is better than that of air, especially in the scene of frequent clutch use. Therefore, the wet dual clutch automatic transmission has the characteristics of good ride comfort, strong stability and long service life, which is more popular among consumers and becomes the mainstream of dual clutch.

The following small series will lead you to learn about the top 10 mainstream DCT gearboxes in China and see who is the strongest.

The above are ranked according to the torque they bear.

Dongfeng 6DCT150 is a wet dual-clutch gearbox jointly produced by Dongfeng and Getrag Company. Established in 2012, Dongfang Style Traak Automobile Gearbox Co., Ltd. is a joint venture established by Dongfeng Company and Getrag International Company, each holding 50% of the shares, to jointly develop, manufacture and sell low-torque dual-clutch gearboxes. In the second half of 2014, the design of 6DCT150 wet dual-clutch gearbox was finalized, with six forward gears and one reverse gear, which can withstand the torque of 150Nm. Later, engineers further improved that the current maximum torque can withstand 200Nm, and it does not exceed 60 kg after filling oil. Using the unique micro-sliding friction technology of Getrak, after the clutch is fully combined, a thin oil film will be attached between the friction plate and the clutch plate, which can effectively alleviate the instantaneous speed or torque fluctuation and bring a smoother driving experience. The gearbox is a lightweight and compact third-generation powershift, equipped with cascade gears and intelligent execution system, and its transmission efficiency, fuel economy, shift comfort and other indicators have reached the leading level of similar products.

The gearbox matched by Beijing Hyundai Elantra 1.4T is D7GF1 dry dual clutch gearbox produced by Beijing Hyundai Elantra, with the maximum torque of 220 Nm. The reliability and stability of 6at gearbox produced by Mobius are very high, second only to. This 7-speed dry dual clutch adopts motor-driven shift technology, and its internal components are mainly two dry dual clutches, two clutch actuators, two sets of shift actuators and three-axis planetary gear sets. In terms of reliability, it is higher than most dual clutches on the market, but the inherent problems of dry dual clutches such as fear of heat and low speed frustration are still not well solved. In the case of extreme congestion, these two gearboxes may have overheating protection, and the market reputation is average.

In order to get rid of the dependence on Aisin 6AT gearbox, Volkswagen is the first car company to popularize dual-clutch gearbox on a large scale, and it is also an example for some domestic car companies to learn and imitate. Volkswagen DQ200 is a seven-speed dry dual-clutch gearbox, which can bear the maximum torque of 250NM. At present, it is produced by Volkswagen Transmission Dalian Co., Ltd. in China. DQ200 has the advantages of fast shifting speed, simple structure, high transmission efficiency and good fuel economy, with a weight of only about 70KG. It is mainly matched with Volkswagen 1.4T engine and is widely used. There were many complaints in the early days, but with the continuous improvement of production technology, the proportion of complaints about this gearbox is gradually decreasing. However, the inherent disadvantage of dry dual clutch is that there is no cooling of gearbox oil. In the process of frequent start and stop of dry dual clutch, the clutch is easy to overheat, which leads to clutch plate jitter, abnormal noise and even damage.

Jianghuai is one of the earliest independent automobile companies in China to develop DCT dual-clutch gearbox, and it mainly cooperates with others. Its clutch module and electromagnetic box are from Bogwarner, and TCU software program is from Germany. The net weight of JAC’s 6th gear powershift is only about 71.5kg, which is due to its two sets of internal and external nested shafts. 6DCT gearbox adopts JAC’s unique patented clutch protection design, with two additional clutches. When the clutch is overloaded, it can quickly turn on overload protection and safety cut-off. In order to realize automatic transmission control, there are as many as 12 sensors connected in TCU control unit, which can effectively monitor the working state of the whole machine in real time and cope with various complex environmental conditions. Jianghuai 6DCT gearbox optimizes the gear position and gear arrangement, reduces idling parts, shortens the axial length, and effectively improves the product compactness. The gearbox also adopts high-precision and high-efficiency internal meshing rotor oil pump and new DCT special lubricating oil, which greatly reduces the energy loss of the system, makes the fuel consumption of the whole vehicle close to the level of manual transmission with the same gear number, and the transmission efficiency is as high as 95%.

It is one of the earliest manufacturers of dual-clutch gearbox in independent brands. "DM21", a new generation of MEGA TECH 7-speed wet powershift, is the latest fist work of SAIC. The total weight of the transmission is 82KG, which is the third generation product independently developed by SAIC. The economy, ride comfort and durability have been further improved, and the torque capacity has reached 300Nm, which has changed the problems of the previous generation gearbox, such as frustration and abnormal noise. This gearbox has an ultra-high transmission efficiency of 97%, and is equipped with an original three-cavity independent cooling and lubrication system for gear cavity, hydraulic control module cavity and clutch cavity, which effectively ensures fuel economy and stability. In addition, it also uses the ultra-high pressure zero leakage control system to ensure the accuracy and speed of shifting. This one is mounted on MG6, and its overall performance is remarkable, and its shifting is smooth and silky, with both power and handling. The transmission was rated as one of the top ten transmissions in the world in 2021.

The 7-speed wet powershift used by Changan Automobile is produced by its own company, and its code name is DF727. It was successfully developed in 2017. In 2019, DF727 was applied to self-owned brand passenger cars in batches, with the production and sales reaching more than 100,000 units. DF727 is the flagship product of Qingshan Industry in recent two years. Once it was launched, it was favored by the market, with compact structure, high-precision clutch thermal management strategy and intelligent gear shifting technology. Its comprehensive transmission efficiency reaches 94.3%, and it is widely used in 1.4T and 1.5T blue whale engines in Chang ‘an, such as UNI-T, CS55, etc., with excellent power response and fuel economy. At present, there are three known models: DF727A/B/C, and the maximum bearing torque is extended from 270NM to 300NM. The actual driving experience is not bad, but the probability of DC270 being frustrated when driving on low-speed congested roads is slightly higher. The quality of the gearbox produced by Qingshan with military quality is guaranteed.The transmission was rated asIn 2021, the world’s top ten speed changes in the Dragon Pan Cup.

When it comes to gearboxes, we have to admire Chery, which is a unique brand in China and independently developed CVT15 and CVT25. However, the torque of CVT gearboxes is limited. With the equipment of Chery’s strongest 1.6T and 2.0T high-torque engines, Chery has to equip them with gearboxes with greater torque. So Chery and the cooperative 7DCT300 came into being. 7DCT300 is the third generation gearbox with intelligent execution system, which can be horizontally centered and horizontally front-mounted, and the maximum input torque can reach 320Nm. Five high-performance clutches and gear shifting are adopted, and the gears equipped with smooth gear shifting and fast response speed, accurate sliding control of clutches and high-precision equipment processing also bring excellent NVH performance to the transmission, with comprehensive transmission efficiency exceeding 96% and net weight as low as 65kg. With the advantages of leading transmission efficiency, excellent shift comfort and low power consumption electro-hydraulic intelligent execution system, 7DCT300 has been favored by many OEMs.

The 7-speed wet dual clutch used by Geely is jointly developed by Geely and Geely, and is compatible with 48V light hybrid plug-in hybrid system. 90% of the suppliers of Geely’s dual-clutch gearbox are the top suppliers in the world. Compared with the traditional dry or wet DCT, Geely 7DCT adopts the latest generation of electro-hydraulic execution system. This not only retains the oil-cooling mode of wet double clutch, but also adopts the high-efficiency motor-driven shifting process, and adopts the controllable variable oil pump, which can supply oil on demand, and improves the power efficiency to the extreme, with the highest transmission efficiency reaching 97%. The great improvement of efficiency is closely related to the reduction of internal friction, and the loss of the product itself is further reduced through a number of technologies, such as electronic gear shifting, separate electro-hydraulic control of clutch, optimization of housing to reduce lubricating oil spill, and cooperation with famous lubricating oil manufacturers to develop low-viscosity DCT oil, so as to finally reduce internal friction and improve transmission efficiency. At present, Geely is widely used in the Lectra series, etc. From the current actual use effect, Geely’s 7-speed wet dual clutch is relatively stable.

As early as 2011, BYD developed a 6-speed dry dual-clutch gearbox with reference to Volkswagen DQ200 gearbox, which is the earliest car company in China to master the technology of dry dual-clutch gearbox. In 2013, BYD introduced the 6-speed wet dual-clutch gearbox 6DT35, which is still the result of reverse research and development. This gearbox can now be seen on BYD’s Song and Song MAX models. Its maximum torque is 350Nm and its weight is 94KG. At present, it only matches some small displacement engines. According to the owner’s report, BYD’s 6-speed wet dual-clutch gearbox has problems such as frustration and abnormal sound, and its quality needs to be improved. Fortunately, in 2020, BYD launched a new 7-speed wet dual-clutch automatic transmission. By simulating various operating conditions, the transient dynamics simulation analysis was carried out, and the unbalanced load with each gear was continuously corrected, so that the gear meshing was smoother, the impact between gears was reduced, and the smoothness of the transmission was better and the failure rate was lower. In terms of durability, the official claims that it can match the service life of AT. In addition, the new gearbox has higher transmission efficiency, more fuel saving, lower noise control, more direct power, and the transmission efficiency is as high as 95%, which is already in the leading position in China.

Great Wall, a gearbox, is based on itself and draws on the strengths of others.Great Wall DCT450 seven-speed wet dual-clutch gearbox, its comprehensive quality is recognized as a high-end product in the industry at present. Mainly manifested in: first, high reliability, accessories from famous enterprises,For example, the bearing of the gearbox is Schaeffler, Germany, and the dual-clutch module is Bogwarner TCU, USA. This gearbox consists of 157 parts, of which only 18 parts such as the outer shell and gear are produced by Great Wall itself, and all others are supplied by internationally renowned suppliers. Second, the noise control is excellent, it uses very low viscosity lubricating oil, and with the design of this gear pendulum vibration reduction flywheel, the noise of the gearbox is about 10 decibels lower than that of other similar levels; The third isIt can bear a large torque, and the maximum torque is as high as 450Nm. The adaptive models include mainstream 1.5T-2.5T gasoline engines, because the peak torque of these machines is basically between 250 and 450 nm. Fourth, the transmission efficiency is high, and the transmission efficiency of DCT450 gearbox is also very high, reaching the high standard of 95%. There are not many DCT that can reach this level, so this machine has obvious improvement effect on the performance of vehicles.

What’s your experience and feeling about the dual clutch? Welcome to leave a message and discuss in the comment area.

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　　[Autohome News] Every year, the Guangzhou Auto Show is like a timer, telling us that the end of the year is approaching. The 2020 Guangzhou Auto Show is particularly special. In the face of the post-epidemic era, car companies will bet on many blockbuster models this year. Nearly 120 new cars came together to bring a unique visual feast.

　　Among the many new cars this year, we paid special attention to those extended models, such as "so-and-so L", "so-and-so Plus", etc. With the continuous enrichment of Chinese family members, many car brands prefer to put extended models on the market, which seems to be very "appetizing" for Chinese consumers. So, is this really the case? Is the extended version really a "dish" for consumers? To this end, we conducted a special comparison test. Two Autohome car news team editors experienced it firsthand. A tall and mighty, a petite Yiren, rode in 10 cars together, and recorded their true feelings, asking them to tell you, do we need such a "long wheelbase" model?

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　　Topic Selection Statement: This topic is in the back rowNo standard sitting postureTo experience the feeling of space, but according to the editor himself in daily lifeThe actual riding posture in lifeTo feel the changes brought by the extended space, the editing experience in the topic is for reference only or can be used as a reference for people of the same size. In addition, during the execution of the topic selection, my colleague (height 180cm) has adjusted the front driver’s seat to a relatively comfortable angle. If you feel any difference, please go to the 4S store to experience it for yourself.

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Audi Q5L Sportback: Sitting with restraint vs stretching, who has the more accurate experience?

　　As a coupe SUV model, the biggest feature of the Audi Q5L Sportback is the classic back-slip shape, and the dynamic body curve highlights its distinct personality. The performance of the Audi Q5L (current model) in China is quite good, whether it is from the brand, model, or practical space, it is basically in line with the performance of this level. Then the mid-term model of the Q5L has given priority to the introduction of the Sportback version. As a sports-style coupe SUV, the new car has a sporty style without losing space, giving those who want to highlight their individuality, but also want to take care of the family. Audi also wants to take this opportunity to attract more young consumers and regain a place in the younger market.

　　Without further ado, let’s go directly to the data. The length, width and height of the Audi Q5L Sportback are 4778/1892/1666mm respectively, and the wheelbase is 2908mm. The new car is positioned as a medium-sized SUV. Compared with the size of the Audi Q5L, the new car has increased in body length and height, while the wheelbase remains the same. After all, the new car is launched based on a mid-term model, and there will be no major changes in the basic body data. So does the "L" in the Audi Q5L Sportback still have its meaning?

　　Yes, the problem is here. Although the shape of the back is good-looking, as a "long wheelbase" model, is the actual riding space in the back row satisfactory? After the two editors of Graduation and Li Na personally ride, we can see that although it is an "L" extended model, it is obvious that the legroom of Graduation is slightly restrained and not so generous, while Li Na’s legroom is still very large after riding. Although this visual experience is brought about by the difference in body shape between the two, the actual riding experience The two editors have their own unique insights.

　　Graduate admitted: "As a person who is 182cm tall and weighs 100kg, the rear shape of the Audi Q5L Sportback really makes me very embarrassed to get on and off the bus. Although the shape of the back is fashionable and good-looking, if you don’t develop the habit of lowering your head when entering the car, it will still make the back of your head come into close contact with the C-pillar. In addition, my legs can still have some room to move in the half-lying position, and the seat comfort is not bad. The overall riding experience is not bad, so I think this" L "is still very necessary. However, after seeing my colleague Li Na sitting in the car, there is still a very ample space around, which is very envious."

　　Li said: "I am very satisfied with the space in the back of the car, and the legroom is very good, even if it is not extended, it is enough for a thin girl like me. Coupled with the comfort of the seats, the overall riding experience in the back row is very friendly for people of my size. However, one thing I am not satisfied with is that the raised height of the platform in the middle of the back row is a bit awkward, even if it is a temporary emergency for three people to ride, the middle person will be very awkward. Overall, the increase of this’L ‘is a plus for me."

　　Although the two sides have different opinions on the feeling, the final result is actually the same. The existence of "L" has made the two of them get a better ride experience. But it has to be said that because of the application of the back shape, it does make the rear head space of the Audi Q5L Sportback feel slightly depressed, so when riding, some people may go down and avoid the roof in a half-lying position, but this will inevitably affect the leg space and the supporting feeling of the thighs. At the expense of the bright head space, it is more practical for regular SUV models. For the petite Li Na, the height of the top of the car is indeed not a problem. Not only does she not feel very depressed, but she even feels very bright. Even if she slips down, she does not feel that the space is crowded.

　　However, both of them also had a problem with the feeling, which was the raised platform in the middle of the back row, which made the lateral space of the feet in the back row less friendly. Although it was because the four-wheel drive shaft needed to leave more space in the chassis layout, leaving such a huge raised platform in the car really brought a bad feeling.

　　According to the actual body height data, the new model is 7mm higher than the Audi Q5L, but Li Na believes that this does not clearly explain the difference in the interior space between the back and the conventional SUV. Firstly, the higher part is not necessarily added to the interior of the vehicle. Secondly, a groove has been reserved for the head at the top of the car. Thirdly, after all, the rear row is more for family members, such as children and women at home, and the demand for space is not very urgent. Therefore, the rear row of the car is still worthy of praise in many use cases.

　　If we analyze the user population of the Audi Q5L Sportback, most of them are young and fashionable, who prefer sports performance and want to show their individuality. Therefore, from the audience’s perspective, the car’s back-mounted shape and dynamic body posture seem to meet the needs well, and the Sportback model does not lose too much interior space. In terms of power, it is also supported by a high-power version of the 2.0T turbocharged engine, so it does meet the needs of those young people who are rich in personality but want to take care of their families. But the graduate said that for his body type, even if the wheelbase of the car has reached 2908mm, it is still difficult for the "long legs" of this size to sit in the back in a very casual and comfortable sitting position, so after the car is replaced in the future, can the space utilization rate in the car or the angle of the rear seat back be optimized?

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New Audi A3/Audi A3L: Overseas original vs domestic lengthened, who is better?

　　After riding in the Audi Q5L Sportback, the two editors then entered the hottest models of this Guangzhou Auto Show – the new Audi A3L and Audi A3. The extended sedan version of the Audi A3L not only retains the sporty appearance, but also enhances the overall space practicality of the car, and the overall competitiveness has been significantly improved.

　　Of course, although the sedan version of the Audi A3 has added "L" after this replacement, it is still positioned as a compact car, with a length, width and height of 4548 (4554)/1814/1429mm respectively, and a wheelbase of 2680mm, which is 51mm longer than the old model in terms of wheelbase. The new Audi A3 hatchback version maintains the original design of the overseas version, and the wheelbase remains the old model 2629mm.

　　In order to better compare the feelings, the two editors also rode in the hatchback version of the Audi A3 model. This comparison can clearly reveal the difference in the rear space of the two people riding in the same model with different wheelbases. Obviously, the rear row of the Audi A3L is longer and more spacious. But how much recognition can the role of "L" bring on the feeling level?

"The new Audi A3"

"All-new Audi A3L"

　　Graduate said after riding two models: "Even with the’L ‘extension, I still can’t hide the slightly embarrassed expression on my face. The 51mm wheelbase of the new A3L has no practical effect on me, and even my long legs still have nowhere to fit. Not to mention the back row of the A3, which can be described as completely unable to fit me; while the A3L is barely tucked in, the distance between the knees and the back of the front seat is still not so wide, and I can’t ride in a relaxed position. If you sit upright, the head space is slightly suppressed, which makes people feel very helpless."

　　Li Na’s feeling is very obvious, "Sure enough, there is a gap when there is a contrast. Sitting in the back row of the Audi A3, even a petite physique like me can obviously feel very restrained. Sitting in the back row of the Audi A3L is different. The legroom is still generous, and even Erlang’s legs can be raised with hard work."

　　Obviously, even if the wheelbase is lengthened by 51mm, it still cannot satisfy the physique of graduation. So for graduation, a compact car like the Audi A3 is ultimately used for driving. If you consider the Audi A3 when buying a car, then it must be for two people to use the car, and the rear seat space will not be the first factor to consider, so this "L" is actually better for graduation. In contrast, Li Na’s experience after the experience is more contrasting. For women who are slightly petite, the "L" of the Audi A3L can indeed improve the riding experience. Li Na is obviously more optimistic about the extended version of the Audi A3L. Whether it is buying a car by herself or a boyfriend, they are more inclined to the extended version of the sedan. As for the hatchback version, both of them shook their heads, "Forget it for home use, it’s still very easy to commute to and from get off work."

　　To sum up, it can be said that the extended Audi A3L can indeed better satisfy the home to a certain extent in terms of riding space, and with an extended wheelbase, it is easier to enter the rear row than the unlengthened model, and the sitting position will be more stretched. In other aspects, the overall interior design of the Audi A3L is still on trend, young and full of technology. Coupled with the application of the segmented panoramic sunroof, it further enhances the sense of space in the car and reduces the pressure on the head, which is commendable. For the two-person world, this car "L" is fine.

Mercedes-Benz E-Class: Long axle vs standard axle, who is the appearance of a medium and large car?

　　After experiencing the hot Audi models, we walked to the luxurious Mercedes-Benz booth. Here we found a good comparison of models – Mercedes-Benz E-Class long axle and axle version. At the 2020 Guangzhou Auto Show, the E-Class standard axle version was officially launched. At first glance, the side design of the two versions can be said to be basically the same, but a closer inspection revealed that the rear door triangular window design of the two cars is completely different, which is the easiest place to distinguish between long and short wheelbase cars. Because of this, the standard axle version looks relatively compact, while the long axle version is more atmospheric.

　　In terms of riding experience, compared with the long axis and the standard axis model, the standard axis version is indeed slightly inferior to the domestic extended wheelbase version, especially sitting in the back row. Due to the fact that the platform in the center of the rear seat takes up more foot space, the overall sense of space is not good. In contrast, the long axis version has a significantly longer rear row, and the materials used in the car are also more luxurious than the standard axis version, which enhances the comfort of riding in the car.

　　"Sitting in the long-wheelbase version, I unconsciously crossed my legs, which is enough to show that the space feeling of this car is very good." Li Na said. From the comparison of data, the length, width and height of the E-class axle are 4947/1852/1467mm, and the wheelbase is 2939mm. The length, width and height of the long-axle version are 5078/1860/1490mm, and the wheelbase is 3079mm. The body size of the whole car can be said to have an overwhelming advantage.

"Mercedes-Benz E-Class Axis Edition"

"Mercedes-Benz E-Class Long Axis Edition"

　　"For the Mercedes-Benz E-Class, I think the long-wheelbase version is more in line with the positioning of this luxury medium and large car." This is the first sentence after graduating from the standard axis E-Class to the long axis E-Class. "For the imported standard axis E-Class, people of my size are sitting in the back row. In fact, the space is still very cramped, but the long axis model has a full 140mm distance, which makes me feel very comfortable. Even if you sit in the back seat in a half-lying position, you won’t feel that the legroom is too narrow, and the rear configuration of the domestic long axis model can be called luxurious."

　　"For example, take the rear center armrest as an example. Compared with the imported standard axle and the domestic long axle, you even think that the standard axle E-class is an entry-level low-end car. So if the money is not bad, I personally recommend choosing the long axle version. After all, the comfort of the back row and the open feeling brought by the large space are both relaxing and refreshing." After getting off the car, Graduate walked to the front of the car involuntarily, "No, no, this has nothing to do with the logo. What I care about is the perfect ride experience brought by the luxury medium and large car." Graduate touched the three-pointed star logo and said.

　　Li Na looked at the graduation from the side and nodded frequently, "I think the rear space of the long axle axle is very fragrant, there is nothing to be picky about." Of course, in addition to having a certain psychological positioning for this car, Li Na also expressed the attitude of most girls towards this car. "Anyway, for girls like me, the long axle and axle are not very different for us, and we will not compare the rear space when buying a car. What people value is the brand, who asked you to talk to me about the connotation?" Li Na also touched the three-pointed star logo and said.

　　After reading the riding experience of the two editors, do you feel that you have been recharged by Mercedes-Benz? In fact, Mercedes-Benz is indeed a more desirable brand for many people. After all, the Mercedes-Benz brand itself has a high tone, and most of its models are also favored by consumers. Take the rear center armrest of the long-axis E-Class as an example. This is the conscience configuration of domestic models, so for users who have strong requirements for riding experience, the "L" of the Mercedes-Benz E-Class is really fragrant. Whether it is for home use or commercial use, Mercedes-Benz can give a satisfactory answer. What is the significance of the axle model? Maybe for some market segments, or for some users with more driving requirements, or something else. In Hegel’s words, existence is reasonable, and the choice of long axis and standard axis still needs to be judged according to the specific rigid needs of the buyer.

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BMW 330Li xDrive M Performance/M3 Thunder Edition: Performance vs. Long Wheelbase, which is more important?

　　Looking at the long list of model names of the 3 Series feels very dynamic, but this BMW 3 Series equipped with the M Performance sports package is really a long-axle version. Looking back at the BMW M3 Thunder Edition, well, the standard axle model is really fragrant!

　　The new BMW M3/M4 models at the Guangzhou Auto Show have all started pre-sale, and the pre-sale price of the M3 is not more than 100, which is good news for some users. BMW 3 Series models have always been famous for their control, and the control of the 3 Series in successive generations cannot be said, let alone the M series. So all generations of 3 Series are also looking at the M3, such as installing some M performance kits.

　　Especially the 330Li xDrive M Performance model we took this time, the appearance is very sporty, with a carbon fiber front lip surrounded by the front, a large-size wheel rim and brake caliper, and a small carbon fiber spoiler at the tail. All the appearance and sporty attributes rely on the M series. However, in terms of interior space, the Li model is indeed much longer than the M3, but the two editors have some unique views on the ride experience.

　　Let’s look at the data first. In terms of body length, height, and wheelbase, the 3 Series long axle is 104mm longer than the M3 model. It is definitely better in terms of rear seat space, but is the wheelbase and rear seat space really that important for models with sporty performance?

　　After sitting in the BMW 3 Series long-axle version, Graduation said: "In this level of models, the legroom is larger than expected, and the ride experience is not very cramped. Although you can’t lie down like Beijing paralysis, the lengthening of the 3 Series Li is still obvious. As far as lengthening is concerned, there is no problem! But…", Graduation changed the conversation, "This is a four-wheel drive 2.0T high-power version model with M Performance sports kit. I want to buy this car because of its sports attributes and handling performance, and I won’t choose it for space. Look at the leg space of the M3, although it is equivalent to no, it doesn’t matter, it is a high-performance car, is the rear row important?"

　　Li Na’s views on the 330Li model are inconsistent with graduation. Li Na said: "If I want to buy such a sports mid-sized car, I must consider the back row. I don’t go to the track, but I like the BMW with sports attributes, so I need to have sports attributes and find a balance point for home use, so that my family will support me when I buy a car. After all, a car needs multiple attributes for the whole family. I think the BMW’L ‘adds very well." Li Na firmly said, "But the BMW M3 is different. Although the rear row does not have any absolute advantages, this does not prevent me from loving it. 3.0T turbocharged inline six-cylinder engine, 510 horsepower, nothing to say, it is’fragrant’!" And Li asks a crucial question: "If I had an M3, would I sit in the back? Obviously not. So does the back matter?"

　　From the conversation between the two editors, we can see that they agreed that the rear space of the BMW M3 model is not important. But for the BMW 330Li model, the lengthening is very different. In fact, for sports cars like BMW or other brands, most of their buyers are concerned about performance and handling, and the long wheelbase means that some control and performance are lost, so this lengthening is not friendly.

　　However, in real life, there are not so many people who will run the track and modify, but still want to have a car that looks great. So, why not buy a very sporty model while taking into account daily use? So, there is no absolute right or wrong in car selection, only more or less demand, long wheelbase and performance at the level of user request, maybe you can have both.

New Modern Tucson L: Born to lengthen, how effective is it?

　　As an overseas brand model, the new Tucson L can be said to be a relatively special car. It is not a domestic lengthened car, but in the original car-making plan of Hyundai Motor, it launched the "L" version for the South East Asia market. In this way, the new Tucson L is born with an extended attribute. According to overseas information, the wheelbase of the new Tucson L will reach 2755mm, which is 85mm longer than the 2670mm of the old Tucson.

　　For such a "natural beauty" model, how is the real experience of the rear space? During the ride, Graduation and Li Na have shown a more ordinary performance. As compact SUVs, they are subject to this level of positioning. Even if the body is lengthened, the riding space still cannot reflect the attributes of "L". However, it is commendable that the central platform of the Tucson L is low in height and has enough space to accommodate the feet. If three people sit in the background, the crowding is relatively small.

　　Li Na believes that, "In fact, the rear seat space of Tusheng L is actually enough, and it is very in line with the needs of Chinese consumers. It is not only friendly to small girls, but also a big guy like graduation can have a good seat space performance. Even if there are children at home, after installing the child safety seat, the interior space is very good."

　　However, Graduate was not satisfied with this kind of space performance, "Since you advertise the lengthening attribute of’L ‘, why can’t you make it longer, so that users can really experience the effect of’L’. The current leg space is not enough, but it is too standard, and you can’t feel the surprise of lengthening it well. In addition, you have to complain about the center armrest in the back row. There is a central armrest, but it has to be made without it, and there is no place to borrow force. If you want to open it, you have to reach into the armrest and pull it out hard. This is too bad. Coupled with the short and thin design, it doesn’t leave a good impression on Tusheng L."

　　In general, if you just evaluate the rear legroom, both of them agree that this is a decent design. But graduation may be a little more extreme, thinking that "L" should look like "L". If you just use "L" as a gimmick without considering the actual application, this "L" still needs to be thought twice. Li Na thinks that as a family compact SUV, the space can do this, and the original factory has made corresponding changes to the model for different regions, which is a very friendly move, so he thinks that this "L" is not wrong.

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Kia Ka Wah: Is MPV the same as lengthening?

　　After experiencing a series of sedans and SUV models, we thought we needed to have a model that seemed very long but did not actually lengthen, so as to show the advantages and disadvantages of the lengthened model. Therefore, when we came to the Kia booth, we took a fancy to this Wang fried contestant – Kia Ka Wah. As a medium and large MPV, its rear space advantage is naturally needless to say. Especially for petite girls like Li Na, it can be described as "free movement". When riding in the second row normally, you can fully lift your feet without touching the front seat. Of course, for the graduation of big people, the footspace is also very ample. Compared with all the lengthened models in front, the space advantage of the MPV model can be said to be "L". But we are not using it for comparison, but to give you a reference, so that you can understand what kind of lengthening is really practical.

　　For this medium and large MPV, the space can be said to be perfect, but there is a fly in the ointment. For Li Na, when stepping into the rear seat, it is not very convenient to get on and off due to the high height of the vehicle chassis and no pedals are added. Especially when getting off, it is necessary to have a perfect "rotary jump". This design has been complained by Li Na. Of course, for Kia Ka Wah, this part of the design does need attention, but this time it is a US standard version model. If it is produced domestically, it may increase the configuration for Chinese consumers, which is worth looking forward to.

　　In addition, for the adjustment of the seat, during the ride, Li Na was basically unable to adjust the position of the second row of seats by herself. On the one hand, it came from the "strange" seat adjustment design of the car, and on the other hand, the seat adjustment buttons were very stiff, and even if the girl with little strength used the "power of the world", it was difficult to lift it.

　　For Graduation, with the advantage of its own leg length, there is no inconvenience caused by Li Na’s lack of lower pedals, and there is no big objection to the seat adjustment problem. Not only that, in terms of the performance of the interior space, Graduation gave praise. The seat can not only be adjusted back and forth, but also can be adjusted left and right, making full use of the interior space of the MPV. In addition, the seat comfort is also very good. After lifting the leg support and opening the electric waist support, it is very comfortable to ride in the boss chair.

　　From the overall design of Jiahua, it can be seen that its body is more "chunky" than "tall and thin", which means that Jiahua has a higher advantage in the width of the body, which improves the flexibility of the interior space. Although the future domestic version of the model has not been disclosed yet, its overall shape may not change much, only a small adjustment.

Mercedes-Maybach S-Class: The Ultimate Profundity of Extension

　　After experiencing the space experience of the above models, we finally came to the "ultimate version" of the extended model – the new Maybach S-Class. I believe that this car does not need too much introduction to everyone to know what kind of existence Maybach is. The new Maybach S-Class, as the flagship sedan of the Mercedes-Benz S-Class series, combines elegance, luxury, technology and comfort, allowing passengers in the back seat to experience the most comfortable ride experience.

　　Compared with the long-wheelbase S-Class model, the Maybach S-Class still grows 180mm, reaching 3396mm, but the overall body looks very coordinated, there is no imbalance in proportion, and even more solemn. So what kind of space did the two editors experience when sitting in such a model?

　　Graduation was the first to exclaim, "Fragrant, so fragrant! It’s really a pleasure to be able to sit in a Maybach!" Graduation exclaimed, "The legroom can be said to be more than enough, placed horizontally and vertically diagonally, you can have any posture you want, and you really want to find out even the slightest flaw, but it doesn’t. Well, don’t disturb my dreams, let me lie down for a while, ‘Beijing paralysis’ is the most suitable place in this place."

　　The longest stay in this experience session was on the Maybach S-Class car, sitting in the Maybach S-Class. In addition to graduation, Li Na also admitted that she became rich in seconds, posed well, and took selfies! "There is no doubt about the luxury of the Maybach S-Class, covered with a lot of leather materials. The comfort of the rear seats must be greatly praised, and the headrest cushion + independent leg rest will naturally not be absent. In addition, the adjustment stroke of the leg rest and foot rest has also increased by 50mm and 10mm respectively. The maximum inclination angle of the back of the rear double independent executive seats is as high as 43.5 °. How do you say this? Enjoy!"

　　For the Maybach S-Class, such an "extended" model not only brings a perfect experience in space, but also basically achieves excellent performance in the luxury field. Although Maybach is now a sub-brand of Mercedes-Benz, the luxury and dignity of the old Maybach are not completely lost. Such an "L" is the meaning of the extension.

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Toyota Lingshang/ALLION: Although not experienced, it is worth looking forward to

　　It’s a pity that we didn’t get to sit in Toyota’s popular models, Lingshang and ALLION, to experience what the "extended Corolla" is like. Facing the Camry and Asian Dragon on the top, and the Corolla and Leiling on the bottom, what kind of challenges will the space performance of these two new models face?

　　From the appearance alone, the appearance of the new car has been slightly changed compared to Leiling and Corolla, but the relationship between the two new cars and Corolla and Leiling can still be seen at a glance. In addition, the wheelbase of both new cars has been lengthened. According to the currently known data, the wheelbase of the car has reached 2750mm, and the proportion of the side of the body is also more slender. In addition, the Lingshang model is marked with the words "GT" at the rear of the car, which is officially explained as a longer wheelbase and wider tires. It seems that the official has good expectations for the ride experience of the new car.

　　It is worth mentioning that both new cars have a small detail, which makes people feel a lot more emotional. The rims used by Ling Shang’s new car at the auto show are the rims of the 14th generation Crown Sport model, while the new car displayed by ALLION at the auto show uses the rims of the 15th generation Crown model that has not been introduced in China. This detail is worth paying attention to.

　　Finally, when we face new models, there are always many good expectations. Judging from the market feedback and consumer response, both new cars are still very eye-catching. If you don’t know the specific configuration and pricing of the next two new cars, let’s experience them again in the future test drive evaluation.

Full text summary:

　　For Chinese consumers, since ancient times, they have been in love with the magnificent and majestic mountains and rivers, which naturally makes our car aesthetics also prefer "long wheelbase". Based on this, many extended models can be regarded as "special cars for China". In order to cater to the Chinese car buying habits, as long as the wheelbase is lengthened, it seems that there is no need to worry about selling. It has to be said that from the perspective of the riding experience, the lengthening of the rear space can indeed bring a better experience, and at the same time, it can also achieve the free expansion of the body. Especially for graduates, the extended version of the model is simply a blessing for "long legs". For small or petite girls, if it is not a particularly narrow space, there is not much difference, which can be understood as individual differences in space requirements.

　　Finally, let’s discuss whether we need a "long wheelbase" model? In terms of comfort, a long wheelbase can indeed bring a better riding experience, while alleviating the cramped feeling of the product due to the narrow space in the car. This is unmatched by the standard axle model. But everything must be viewed from both sides. This point of view is only for the truly "extended" model. If it is only changed in the name and the model structure does not substantially change, then the meaning of the "L" model will be lost. For consumers, when purchasing a long wheelbase model, they must make a spatial comparison before making a judgment. At the same time, they must consider various factors such as actual car demand and their own economic strength. Not all lengthening is good, but enough is enough. (Text/Autohome Li Na, Graduation; Photography/Ma Aijun)

　　Founded in 2010, Meituan finally knocked on the door of IPO after eight years. On June 22, Meituan submitted a listing application to the Hong Kong Stock Exchange. If the IPO is successful, Meituan will become the largest listed company in the O2O field in history.

　　According to the Meituan prospectus disclosed by the Hong Kong Stock Exchange today, the number of transactions completed by the company’s platform in 2017 exceeded 5.80 billion, and the transaction volume reached 357 billion yuan. The operating income from 2015 to 2017 was 4 billion yuan, 13 billion yuan and 33.90 billion yuan respectively, an increase of 223.2% and 161.2% respectively year-on-year, and the income increased by more than seven times in three years. Meituan’s adjusted net loss continued to narrow, from – 5.90 billion yuan in 2015 to – 5.40 billion yuan in 2016, and further narrowed to – 2.85 billion yuan in 2017, and the loss was halved within three years.

　　Among the many start-up companies in the O2O field, Meituan should be regarded as a lucky "outlier". From imitating Groupon’s group buying business earlier, to expanding its business scope with the Amazon model as a reference in the later stage, Meituan has been reclassified into the team of Internet Tech Giants.

　　Make another Meituan

　　Meituan’s most recent financing was in October 2017, when it received a $4 billion round of F financing led by Tencent, with a post-money valuation of $30 billion. If calculated at the valuation of $60 billion listed on the market, it means that Meituan’s valuation has doubled in less than a year.

　　In the past few years, Meituan has shown extremely strong ambitions in its field and has become a force to be reckoned with on China’s internet landscape.

　　Starting from group buying, but not ending with group buying. Meituan has its own logic and considerations, starting from a single group buying business and gradually expanding to local life service related fields including Internet takeout, online travel, fresh food e-commerce, online car-hailing, shared bicycles, etc.

　　2015 was an important watershed since Meituan was established. At that time, it completed the acquisition with Dianping, which enriched Dianping’s store-to-store service in addition to the original group buying and takeaway business. It was a year when Meituan focused on building a platform and an ecosystem. After winning the war in the era of group buying and O2O, Meituan began to open up a new battlefield.

　　The intensive organizational restructuring witnessed the expansion of Meituan’s size.

　　In 2015, Meituan established a total of four business groups, including the takeaway delivery business group, the hotel tourism business group, and the store business group, and established a wholly-owned subsidiary, Maoyan Culture Media Co., Ltd. (later spun off and acquired by Guangguang Media).

　　The latest adjustment is after the completion of 4 billion US dollars financing in December last year, Meituan will build a new store business group, large retail business group, hotel tourism business group and travel business unit four business systems, and establish Strategy and Investment platform.

　　"Looking to the future, the opportunities and challenges are great," said Wang Xing, Meituan’s chief executive, in an internal email at the time. The opportunity is that the new business will hopefully help Meituan achieve faster growth, but at the same time, the challenges from peer competitors should not be underestimated.

　　According to the prospectus, Meituan has maintained partnerships with approximately 339,200 hotels in China as of December 31, 2017. In 2017, the number of domestic hotel room nights booked on Meituan’s platform totaled about 205 million, an increase of 56% over 2016, and set a record for 1.57 million domestic hotel room nights in a single day.

　　Online domestic attractions and excursion package booking service, as of December 31, 2017, Meituan covers about 330 cities and about 16,500 attractions across the country. Meituan provides consumers with a convenient, safe and cheap way to buy national attractions and excursion packages. In 2017, Meituan sold approximately 97 million domestic attraction tickets.

　　In terms of numbers, Meituan’s wine travel business has ample confidence to fight against Ctrip, and it has also begun to attack Ctrip’s core business, high-star hotels.

　　Not only the wine travel industry. Since February last year, Meituan has been operating a low-key online car-hailing business in Nanjing. At 0:00 on March 21, 2018, Meituan took a taxi and officially landed in Shanghai. At about 22:00 that night, Meituan announced that Shanghai had completed the first day of breaking through 150,000 orders. Obviously, Meituan extended its competitive tentacles to the Internet travel giant Didi, and caused the latter to respond violently.

　　These later diversified businesses provided Meituan with sufficient foundation to enhance its own value.

　　Benchmarking Amazon, but more than that

　　While bringing innovation impetus to the industry, Meituan is also inevitably involved in multi-dimensional chaos.

　　This is not unrelated to the ultimate goal of Wang Xing and Meituan. A person close to Meituan’s senior management once revealed Wang Xing’s thinking to "Deep Web": Wang Xing’s strategic thinking and goal has always been to be a super platform for life services, and new businesses including taxi-hailing are in line with such strategic goals in his opinion. In this way, it can not only acquire more new traffic for the super platform by continuously launching new businesses, but also find more channels to monetize the huge users and traffic gathered by the super platform, so as to continuously enhance Meituan’s value and valuation.

　　Mr. Wang has mentioned Amazon on many occasions and it is often compared to the tech giant, but Meituan does not seem content to stop at the Chinese version of Amazon.

　　In an interview with The Information, a Silicon Valley technology news outlet, Mr. Wang said: "Users can buy a lot of things on Amazon or Taobao, but both are just e-commerce platforms for physical goods, while Meituan is an e-commerce platform for services." He added, "What kind of e-commerce platform can have millions or even billions of transactions?"

　　In fact, in the past year, 320 million users have made at least one purchase on Meituan. Meituan says that about 90% of user traffic comes from its own app, which greatly reduces the cost of users trying new services.

　　Meituan is not satisfied with this. It has bigger ambitions. Wang Xing believes that Meituan will serve the middle class 650 million China in the future, and smartphones are almost all ubiquitous among this group.

　　Among all Meituan’s businesses, high-frequency takeaway business is the core of the core, and Meituan’s "let everyone eat better and live better" just illustrates this point.

　　The prospectus disclosed that Meituan’s takeaway transaction volume in 2017 was 171 billion yuan, and Meituan’s transaction volume in 2017 reached 357 billion yuan, which means that the takeaway business accounted for 47.8% of Meituan’s overall transaction volume.

　　In May this year, Meituan Takeaway announced that it completed more than 20 million orders per day, becoming the first takeaway platform in the world to reach such a scale. Looking back at past data, Meituan Takeaway has reached 10 million daily orders in more than 3 years since its establishment, and it took just one year to break through 20 million daily orders.

　　Compete with the giants

　　While food delivery data is growing wildly, Meituan’s competitors in the food delivery market are also escalating.

　　Since the establishment of Meituan takeaway, the takeaway market has evolved a new pattern with new retail as the core. If it was a one-on-one showdown between Meituan and Ele.me before, then after Ali acquired Ele.me at the beginning of this year, Meituan needs to face the coordinated battle between Ele.me, Baidu takeaway, word-of-mouth and Ali.

　　In dealing with the relationship with Ali, Wang Xing is very firm, and he even publicly pointed out the dispute with Ali: "The reason why it sold our old shares last year was to interfere with our financing. If you are not optimistic about this company, you can just sell it out. We have already helped them find a buyer. But he refused to sell it out. He must keep some, maybe in order to continue to cause us some trouble in the future."

　　According to iResearch, Meituan was the world’s largest food delivery service provider in 2017, with its market share in China increasing from 31.7% in 2015 to 56% in 2017 and 59.1% in Quarter 1 of 2018.

　　The difference is that Meituan is heading in a completely different direction from Ele.me, with diverse coverage centering on local services.

　　On the one hand, there is Ele.me, the earliest player in the takeaway market, and on the other hand, Meituan, who is backed by Tencent and the late mover, will eventually become a player in the harvest market. It is still a question in the short term. However, it is foreseeable that Ali, who is up the ante layout of new retail, and Meituan, who has just established a new retail business group, are bound to ignite the war again.

　　In the new travel war, Meitu also started a listing race with Didi. According to the "Hong Kong Economic Daily" report, Didi will start listing as soon as the second half of this year, initially decided to settle in Hong Kong, China, and consider different listing structures, not excluding the listing of the same shares and different rights. It is expected that the market value of Didi will reach 70 billion – 80 billion US dollars when it goes public.

　　Obviously, Meituan has taken the starting line one step earlier than Didi, but it remains doubtful whether it can shake up Didi, the transportation giant.

　　potential threat

　　Wang Xing’s goal of unlimited boundaries has allowed Meituan to step into some of the most expensive battlefields of the Chinese internet in a short period of time. But when it tries to raise more capital from domestic investors to expand its business, it has few options.

　　The Information reported in early June this year that Wang Xing had approached SoftBank for a capital injection, but was unsuccessful. Meituan had also intended to raise $3 billion from the Private Offering Fund at a valuation of $40 billion. Meituan later denied the news.

　　Meituan’s earnings pressure cannot be ignored. Although other businesses other than food delivery have achieved overall profitability, with the competition in the food delivery market "three into two" and the competition with Didi in the travel field, Meituan still needs a lot of capital investment.

　　According to the prospectus, Meituan’s adjusted net loss fell from 5.90 billion yuan in 2015 to 5.40 billion yuan in 2016, and fell to 2.85 billion yuan in 2017, halving the loss within three years.

　　In addition, the travel business is also the source of Meituan’s cost. Although it has experienced many close battles in the group buying and takeaway markets and achieved good results, Meituan is undoubtedly a new recruit in the travel industry, and there are still many variables in whether it can achieve a turnaround against the wind. Investment subsidies are obviously the best way to quickly gain market share.

　　According to the "deep net", Meituan taxi in Nanjing on the line when the single subsidy is about 20 yuan, if according to its announced in December 2017 the daily order volume exceeds 100,000 single calculation, its subsidy in Nanjing only one day reached 2 million.

　　36Kr also revealed the power of Meituan taxi investment, including Beijing and other cities on the line of taxi business, the company prepared 1 billion dollars (about 6.30 billion yuan), and not capped.

　　Meituan acquired Mobike in April for a total price of $3.70 billion, including 65% cash, 35% Meituan stock, and assumed Mobike’s debt between $500 million – $1 billion.

　　In an interview with foreign media, Wang Xing said, "In the past few years, we have been working hard to ensure that the company is always ready to go public at any time." In addition to financial considerations, another impetus for Meituan’s listing came from the many investors behind it. Data show that Meituan has raised a total of 8.30 billion US dollars since its establishment, and investors have reached the moment to reap the rewards.

　　In the eight years since its establishment, Meituan has experienced many variables in the market, and it can be said that it has come to this day through thorns. However, going public is obviously not the end of Meituan, and a competition with giants has really begun.