Richard Yu pointed out that people should pay more attention to the drag coefficient when choosing a car. At 120km/h, drag can consume up to 70% of a vehicle's energy!
He further explained: With the same battery capacity, a slight difference in drag coefficient can result in a difference of tens of kilometers in range. The Luxeed R7 achieves both large space and low drag, making it highly worth experiencing!
It is worth mentioning that he specifically recommended the Luxeed R7, noting its success in combining a spacious interior with low aerodynamic drag. He also attached a professional experimental video below his post to verify the benefits of the model's ultra-low drag coefficient.
According to the official introduction from Luxeed, the Luxeed R7 recently achieved a key certification in the CATARC professional wind tunnel. The pure electric Ultra version recorded a measured drag coefficient of only 0.217 under test conditions of 120 km/h and 23 ℃.
In fact, this is not the first time Yu Chengdong has focused on the topic of wind resistance. Back in October 2025, Yu Chengdong released a video detailing the "range killer" of cars - wind resistance.
At that time, he stated that when the vehicle speed reaches 120 km/h, energy consumption due to wind resistance can account for more than 70% of the total energy consumption.
Yu Chengdong also introduced a formula: Drag = (Vehicle Speed × Drag Coefficient × Frontal Area × Air Density).
In the video, Richard Yu also showed examples of how wind resistance increases exponentially at speeds of 80km/h, 100km/h, and 120km/h.
In this case, increasing the vehicle speed from 80km/h to 120km/h, an increase of only 0.5 times, results in a disproportionate 2.25-fold increase in air resistance.
For example, with two models having the same battery capacity, a car with a drag coefficient of 0.23 can achieve a highway range of 500 kilometers, while a car with a coefficient of 0.27 will only have a range of about 420 kilometers.
