each country has its own characteristics: American cars are famous for their coarseness, but now they are becoming more refined, but they have enough power, good quietness and relatively rough manufacturing technology; German cars have exquisite quality, good sports performance and strong mechanical sense; Japanese cars can be summarized in detail, paying attention to the actual experience design of the car, being conservative, simple and easy to use, with fewer minor problems, a sense of design closer to people and a loose chassis; The chassis texture of French cars is very good, and the perfect detail design is wonderful; Both domestic cars and Korean cars started from imitation, and Korean cars started from imitation of Japanese cars; The powertrain level of domestic cars is low, and there is still a certain gap between high-horsepower fuel engines, economical engines and joint venture cars.