Will traffic police check cars with added spoilers?
2 Answers
Adding a spoiler is considered illegal modification, and traffic police will check it. Below are specific details about car spoilers: 1. Overview: A car spoiler refers to the ducktail-shaped protrusion installed at the rear end of the car's trunk lid, which is part of the car's aerodynamic kit. Its main function is to reduce the lift at the rear of the vehicle. 2. Function: The role of a car spoiler is to create downward pressure from air resistance when the car is driving at high speeds, effectively counteracting lift and controlling airflow downforce, thereby reducing the drag coefficient and enhancing the car's high-speed stability. Since spoilers can reduce a car's air resistance, adding a spoiler to high-speed cars can also help save fuel to some extent; it also makes the car's appearance more attractive, serving a certain decorative purpose.
As a veteran who has been in the automotive industry for years, I've seen too many cases where car owners impulsively add spoilers only to be pulled over by traffic police. Modifications must follow the rules—don't assume minor changes are fine. According to traffic laws, any non-factory modifications must be registered, especially for parts like spoilers that alter the vehicle's appearance or affect aerodynamics. Traffic police specifically check for this because oversized spoilers can pose safety risks, such as instability at high speeds. I once had a friend who installed an exaggerated spoiler without registration and was fined 200 yuan and deducted 3 points on the same day he hit the road. For those considering modifications, I recommend first consulting the vehicle management office about registration standards—sometimes, small spoilers can get approved. Don’t invite trouble just for looks. Safety comes first; weigh the risks before modifying.
