Is It Illegal to Install a Rear Spoiler on a Car?

2 Answers
HectorRose
07/25/25 3:47am
Installing a rear spoiler is considered illegal and falls under unauthorized vehicle modifications. Below is an introduction regarding illegal modifications: Penalties for Illegal Modifications: Driving a vehicle with illegal modifications on public roads will result in the vehicle being impounded by traffic authorities, the illegal modifications confiscated, and the owner required to restore the vehicle to its original condition. Additionally, fines will be imposed according to the law. Regulations on Illegal Modifications: For vehicles with illegal modifications, traffic authorities will not issue a safety inspection certificate. If the modifications constitute a violation of public security management laws, the public security authorities may impose fines or detention in accordance with the "Public Security Administration Punishment Law." When modifying your vehicle, it is essential to apply for a modification registration with the traffic management department of the public security authorities to ensure the vehicle can pass annual inspections and routine safety checks after modifications.
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LincolnDella
08/10/25 5:08pm
In my years of car enthusiast experience, whether adding a spoiler is illegal mainly depends on compliance with national regulations. China's vehicle modifications must meet the GB7258 standard—spoiler height cannot exceed 30cm, and the shape must not drastically alter the original design. Otherwise, traffic police may deem it illegal, imposing a 200-yuan fine or even mandatory removal. I've seen many friends fail annual inspections or cause accidents due to loose spoilers at high speeds after unauthorized installations. Safety first—I recommend consulting local DMV filing requirements with your vehicle registration and ID card to clarify procedures. Professional installation ensures stability and compliance. Don’t just chase looks; understanding regulations thoroughly before modifying is wiser.
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