It is illegal to modify automobile exhaust. At the same time, the wheel hub was modified/the height of the car body was changed. In order to make your seat driving more comfortable, the large-size wheel hub was replaced. Some players like to raise the car body and install air suspension to improve the passability of the vehicle. This kind of behavior is illegal, and it must be the same as that of the automobile factory before it can pass the annual inspection. It is illegal to reform the exhaust pipe. According to article 16 of the motor vehicle registration regulations of the Ministry of public security, small and micro cars are equipped with front and rear anti-collision devices; The truck is equipped with windshield, water tank, toolbox and spare tire; Add interior decoration. All three situations are allowed. It is illegal to change other car brands, models and engine models, and to change the appearance of registered cars and related technical data. Car light modification: Car light modification is very popular in recent years, but it is actually illegal. If the halogen lamp of the original car is replaced by xenon lamp, you need to pay a fine.