Fast Technology News on January 10, finally, Lei Jun released the end of "Xiaomi Auto Answers 100 Questions from Netizens", which also answered more than 30 related questions this time.
At the technical conference, Lei Jun said that the drag coefficient of Xiaomi Su7 is 0195, the lowest mass-produced car in the world, but such a result is carried out at a speed of 160km h, some netizens asked if it is so scientific?
Xiaomi's official response said:
At present, there is no unified wind resistance coefficient speed test standard in China, and each brand will formulate wind resistance test enterprise standards according to its own vehicle performance and positioning, and Huawei and other companies have also adopted a caliber of 160km h.
The Xiaomi Mi Su7 has a certified drag coefficient of 0 at 160 km/h195, in the actual measurement we even achieved less than 0With a score of 19, the Xiaomi Su7 is a well-deserved production car with the lowest wind resistance in the world.
It is reported that when the vehicle reaches a certain speed, a large amount of energy consumption will be consumed in the fight against wind resistance, and reducing wind resistance, can significantly reduce energy consumption, for new energy vehicles, the wind resistance coefficient is reduced by 10 count, the mileage can be increased by 7-8km.
In addition, while reducing wind resistance, wind noise will also be reduced, which can provide better riding comfort for passengers in the car, in order to reduce wind resistance, Xiaomi Su7 has put a lot of effort into it, including the front windshield, large slipback and frameless waterdrop rearview mirrors.
However, it should be pointed out that the maneuverable space of the drag coefficient is relatively large, and it will change with the speed, and the same car will be greater than 160kph measured at a speed of 120kph, and many domestic manufacturers will choose smaller data, that is, 140-160kph measured results.
And the choice of 120kph although there are also, such as the recent Geely Galaxy E8 (0.199), but the overall number is relatively small, and in comparison, it can only be said that they are more honest and more dedicated, so they should be commended.