
Adding a spoiler to a car is considered an exterior modification and requires reporting to the traffic management department. If a car owner installs a spoiler without reporting it, the public security and traffic management department will legally impound the vehicle, confiscate the illegal device, order the restoration of the original condition, and impose a fine according to the law. Below is an introduction regarding modifications: 1. Factory Modifications: This refers to cars that are customized by the automobile manufacturer before or after leaving the factory, based on personalized requirements, with varying models and configurations. These modifications have already been inspected and approved by the manufacturer and are installed as complete vehicles. 2. Modification Requires Application: For registered motor vehicles, it is not allowed to arbitrarily change the registered structure, construction, or characteristics. Car owners who indeed need to modify their vehicles must first apply for record filing at the vehicle management office before proceeding with the modifications.

I've reviewed quite a few regulatory documents regarding whether adding a rear spoiler to a car requires filing. China's vehicle management regulations clearly state: any modification that alters a vehicle's appearance, height, or performance must be registered with the vehicle management office. If a spoiler is installed and protrudes too high above the roof or affects the vehicle's silhouette, it must be reported. Failure to do so can lead to serious consequences: traffic police may impose fines of several hundred yuan during roadside checks, the vehicle may fail annual inspections, and you might even have to remove it and start over. Additionally, insurance is crucial—if modifications aren't filed, insurers may deny claims after an accident, which is a significant risk. While adding a spoiler can improve high-speed stability, it must be done legally and safely. I recommend checking with your local vehicle management office first, bringing along invoices and photos of the modifications. In short, don’t ignore the rules for the sake of style—filing is for everyone’s safety.

I installed a rear spoiler on my car purely for the cool factor, but here's a heads-up: you must report it! The process is quite simple: after installation at the modification shop, take the materials to the DMV to fill out forms and get the car inspected—done in one go, no hassle. If you skip reporting it and get pulled over, you're in trouble. My friend forgot and ended up with points deducted and a fine. The spoiler does help with handling a bit, making the car more stable at high speeds, but choose the right size—nothing too exaggerated. Opt for lightweight materials like carbon fiber or aluminum for safety, and avoid cheap, low-quality products that might fall off. Driving feels much better after the mod, but don't slack on the legal reporting requirement. Considering the risks, I recommend beginners check the DMV's official website for requirements in advance to prepare properly and avoid regrets later.

I think adding a spoiler to a modified car requires caution. From a regulatory perspective, it definitely needs to be reported; otherwise, it's illegal. Specifically: if the spoiler alters the height or length of the roof, you must go to the vehicle management office to complete the modification procedures. The risks of not reporting are numerous, such as being fined and penalized with points if caught by traffic police, and even more troublesome is failing the annual inspection. Safety is also a concern, as spoilers can pose hazards in high-speed corners. As an experienced driver with 15 years behind the wheel, I've never made reckless modifications—keeping it original is safe and hassle-free. If you want to add one, consult the vehicle management office or a professional at a 4S store for advice, and don't act rashly.

From a safety perspective on adding a spoiler: It may affect the vehicle's balance, and if installed improperly, unstable airflow at high speeds can lead to accidents. Legally, it must be reported to ensure compliance. The process is convenient: bring the modification certificate to the DMV for inspection, and update the license plate after approval. Cases of non-reporting are common, such as owners receiving demerit points and fines, or insurance claims being invalidated. Choose materials that are durable and lightweight to avoid detachment and injury. Assess the vehicle's structure before modification—for example, low-clearance cars may not be suitable for large spoilers. Safety comes first; don't invite big trouble over small matters.


