Does a sedan need to be registered after adding a rear wing?

[StKhloe]

A sedan needs to be registered after adding a rear wing. The following are the functions of adding a rear wing to a sedan: 1. Save fuel: By utilizing the downforce generated during the car's rapid movement, the car gains greater traction, effectively reducing the air resistance produced during high-speed driving, ultimately achieving fuel savings. 2. Improve driving stability: The rear wing can use the air's adhesion to the ground to counteract part of the lift and control the car's upward movement, reducing the impact of wind resistance, allowing the modified car to adhere closely to the road surface, thereby enhancing driving stability. A rear wing that is precisely calculated based on the car's width not only makes the vehicle more stable and safe during high-speed driving but also reduces air resistance during driving, saving fuel while increasing speed.

[LaMatteo]

I think adding a spoiler to a sedan often requires registration, because the DMV requires any vehicle modifications that alter the appearance or structure, such as a spoiler changing the body contour, to go through the paperwork. I've modified my car before and found that if the spoiler is small and resembles the factory style, it might be fine, but if it's large and exaggerated, you could be pulled over by traffic police for an unregistered modification check. The registration process isn't difficult—just prepare your vehicle documents and photos, fill out a form at the local DMV, and the cost is minimal. However, the issue is that without registration, you won't pass the annual inspection and could face fines. So, I suggest checking local regulations before installation to see if this step is necessary, avoiding unnecessary trouble and expenses. Fellow car enthusiasts often share these experiences, so don't be easily misled by modification shops—safety first.

[KiaraAnn]

I've installed a rear wing before, and honestly, whether you need to register it depends. Minor modifications like a small spoiler that don't significantly alter the car's appearance usually go unnoticed by the DMV. But if it's a large wing that can affect airflow, you definitely need to report it. Last time I forgot to register it, I got fined 200 yuan by the police and was forced to remove it. The process is simple: bring your vehicle license, ID card, take photos of the car, and inform the DMV. They'll inspect it and register it for you. The cost is just a few dozen yuan. Without registration, passing the annual inspection can be tough, and in case of an accident, the insurance company might refuse to cover the claim due to illegal modifications. So, take my advice—think carefully before adding one to save money and hassle.

[LeTucker]

Adding a spoiler requires registration mainly depending on the extent of modification. Chinese regulations stipulate that modifications significantly altering the vehicle's outline or performance, such as adding a spoiler affecting aerodynamic drag, must be reported to the vehicle management office. Minor modifications may not require it, but major changes absolutely require registration. The process is simple: the owner brings the required documents to complete the procedure, which just takes some time. Not registering carries considerable risks: failing the annual inspection, fines, and in severe cases, penalty points. It is recommended to consult professionals before installation to ensure safety and compliance.