Is Modifying Exhaust Decoration Illegal?
3 Answers
If only the appearance of the exhaust is modified, it is not illegal. However, modifying the exhaust sound is considered illegal. Exterior modifications: These can be achieved through methods like decals or vehicle wraps, but the area covered must not exceed 30% of the vehicle's body to be considered legal. If this limit is exceeded, approval from relevant authorities is required. Modifications to the body, frame, or engine: These are only permitted if the original parts are irreparably damaged or have quality issues. Otherwise, such modifications are illegal. Modifying the vehicle color: Changing the vehicle color has become popular in recent years. However, the modification must be reported to the vehicle management office within ten days, and a new driving license must be issued. Most importantly, the color must not be changed to those reserved for national administrative law enforcement vehicles.
I've also thought about modifying the exhaust decoration. If you only replace the exhaust tip trim kit, like a shiny tailpipe, without altering the internal structure of the exhaust system, it's usually not illegal and won't affect noise or emission standards. However, if you modify the exhaust pipe or muffler along with it, causing increased noise or exceeding emission limits, it may violate environmental laws or noise regulations. Last time I added a fancy decoration to my car, it passed the annual inspection easily, but if the traffic police notice the modification issue, the fine can be a real hassle. It's best to check your local vehicle management regulations first—don't save small money only to invite big trouble.
Safety comes first. Modifying exhaust decorations may seem simple, but if not installed securely, the pipes could shake at high speeds, potentially falling off or scraping others, leading to serious accidents. Legally, these modifications aren't inherently illegal, but if they introduce safety risks—like blocking ventilation or affecting braking—police will deem them illegal operations. I once had a friend whose car failed its annual inspection due to such modifications; the inspector said they didn't match the original factory design. It's safer to keep things stock.
