What are the car modification regulations?

[StAlyssa]

Modifications can be made to the body color, engine, fuel type, and frame number, but there are three colors reserved for special vehicles that cannot be used. Replacing the front bumper is considered altering the car's appearance and is allowed after approval, but modifications like raising the chassis to enhance off-road performance are prohibited. Widening tires, modifying the intake system, and exhaust system are also not allowed. Additional Information: Modification: When modifying a licensed car, you must register and declare the changes to the vehicle management office. The modification technical report must be reviewed and approved by the vehicle management office before proceeding. After completing the modifications, you must also go to the vehicle management office to complete the modification change procedures. Practical: Based on the size of the interior space, choose small, aesthetically pleasing, and practical accessories that reflect the owner's personality as much as possible.

[StAnderson]

I've modified my old Civic several times, and car modifications really shouldn't be done recklessly. For example, you must register any changes to the body color with the vehicle management office within 10 days, and any new wheels must be the same size as the original factory ones. The most frustrating part is the body kits—if you change the bumper design or add wide fenders, the vehicle management office won't approve it. Last year, I wanted to lower the chassis, but the modification shop said I could only replace the shocks with original factory specifications, as coilovers are considered illegal modifications. Now, during the annual inspection, they frown at my aftermarket exhaust tips—thankfully, I didn't touch the catalytic converter. I really advise everyone to check the "Motor Vehicle Registration Regulations" before modifying. Shops that push you toward extreme modifications are just scamming you.

[OMaci]

Having been in the auto parts industry for ten years, I'm often asked what modifications are allowed. Now let me clarify: Headlights can be upgraded to LED but must include lenses, with color temperature not exceeding 6000K; tire specifications cannot be altered but wheel rim styles can be freely changed; interior modifications like steering wheels and seats are all permissible as long as they don't obstruct airbags; roof racks are legal if their height doesn't exceed 30cm. However, engine intake/exhaust modifications and ECU tuning are strictly prohibited, and never tamper with the VIN location. Last week, a young man insisted on installing a turbocharger and had his car impounded by traffic police immediately. Remember, all approved modification records can be checked on the 12123 APP.