Is it illegal to post a case on the car door?

It is not illegal to put patterns on the doors, as long as the area does not exceed 30%.

Car stickers can't use special colors for special vehicles and can't affect safe driving, and they should be filed in dmv. According to the law, if spraying, marking or advertising on the body of a motor vehicle affects safe driving, a fine shall be imposed.

Advertising car stickers are not allowed, and humorous car stickers are based on the premise of not affecting others' driving. Personalized car stickers that exceed 20% of a single car body area are illegal and will be punished.

Relevant provisions on illegality of automobile stickers:

1, because red for fire fighting, yellow for engineering emergency rescue and national administrative law enforcement are all special colors for special vehicles, we don't use ordinary vehicles.

2, car spray, paste the logo or body advertising, etc. , shall not affect the safe driving.

3. The area of car stickers shall not exceed 30%. If it exceeds 30%, it shall be filed with the traffic control department.

Legal basis:

Article 13 of the Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China

The motor vehicle number plate shall be hung in the designated position before and after the vehicle, and kept clear and complete. Heavy and medium-sized trucks and their trailers, tractors and their trailers shall be painted with enlarged numbers at the rear of the carriage, and the words shall be correct and clear. Motor vehicle inspection signs and insurance signs shall be affixed to the upper right corner of the front window of the motor vehicle. Motor vehicle spraying, labeling or body advertising shall not affect safe driving.