The error is 40mm.

According to the "Technical Conditions for Safety in Motor Vehicle Operation (GB7258-2012)"

4.9.1 The appearance of a motor vehicle should be clean and tidy, and all parts should be intact, firmly connected, and free of defects.

4.9.2 The car body should be straight, and the height difference between the left and right symmetrical parts of the outer edge of the car should be less than or equal to 40mm.

4.9.3 The height difference between the left and right symmetrical parts such as steering handlebars and deflectors of ordinary two-wheeled motorcycles and light motorcycles from the ground should be less than or equal to ?10mm; The height difference between the left and right symmetrical parts such as the cab and the carriage and the ground should be less than or equal to 20mm.

Extended information

According to "Technical Conditions for Motor Vehicle Operation Safety (GB7258-2012)"

4.5.2.1 The front seat is divided into two parts according to the internal width of the passenger compartment (system Refers to the lower edge of the door window on both sides of the driver and measured inside the rear door pillar) When it is greater than or equal to ?1200mm, it is approved for ?2 people; when it is greater than or equal to ?1650mm, it is approved for ?3 people, but the seat cushion width and seat cushion of each front passenger The depth shall be greater than or equal to ?400mm, and shall not be used as student seats to determine the number of passengers.

4.5.2.2 For seats in other rows except the front row, it can be ensured that the distance from the previous row of seats is greater than or equal to ?600mm and the seat cushion depth is greater than or equal to ?400mm (for those in the second row and beyond) When the distance between folding seats is greater than or equal to 570mm and the seat cushion depth is greater than or equal to 350mm), the number of seats shall be 1 person per 400mm of seat cushion width; however, when used as student seats, the standard for school buses for young children shall be The number of passengers per 280mm is 1, the school bus for primary school students is 350mm, and the school bus for primary and secondary school students is 380mm. When the seat cushion width of a single seat is greater than or equal to 400mm, it is approved for 1 person.

Note 1: Student seats (chairs) refer to seats (chairs) specially for young children on school buses for infants, seats (chairs) specially for primary school students on school buses for primary school students, and seats (chairs) specially for free seats on school buses for primary and secondary school students. Seats (chairs) used by students in the educational stage.

Laiyuan County Government Administrative Law Enforcement Publicity Platform-"Technical Conditions for Motor Vehicle Operation Safety" GB 7258-2012