
Modifying the exhaust sound does not require registration at the vehicle management office because altering the exhaust system is illegal. Even if you attempt to register the modification, it will not be approved, and you will be required to restore it to its original state. Permitted modifications: Vehicle body color can be changed through painting or colored stickers, but it must not affect safe driving or imitate colors exclusive to official vehicles such as police, fire trucks, or engineering vehicles. Exterior decorative parts can be modified, provided they do not harm pedestrians or exceed certain proportions of the vehicle's dimensions. Interior modifications are allowed, but altering the number of seats or the structural characteristics registered with the vehicle management office is prohibited. Wheel rims can be modified, but upgrading to larger sports rims is not permitted. Headlight modifications are allowed as long as they meet lighting and safety requirements. After completing any of these modifications, you must register the changes with the vehicle management office. Altering the vehicle's appearance requires applying to the vehicle management department and updating the vehicle registration certificate promptly. Prohibited modifications: Owners cannot alter the vehicle's structural dimensions, including length, width, and height. Modifications that enhance off-road performance, such as raising the chassis or widening tires, are not allowed. Modifications to the power system, including the ignition system, intake system, exhaust system, suspension system, and spoiler system, are also prohibited.

As a car enthusiast, upgrading the exhaust system can indeed enhance driving pleasure, but registration is mandatory. I modified my own car a few years ago, originally wanting to experiment with different exhaust notes for some extra excitement. However, I later learned how strict the regulations were when I went to register the modifications at the vehicle management office. In China, any modifications affecting noise levels or safety must be reported. Otherwise, the car won’t pass the annual inspection and may even be stopped by traffic police for fines. It’s best to bring your vehicle license to the local vehicle management office to submit an application. They will test whether the noise level complies with standards, usually not exceeding 80 decibels. Before making any changes, consult professionals at repair shops—don’t impulsively cut corners to save money, as it could lead to trouble later. Legal modifications also help avoid neighbor complaints, since no one wants to disturb others late at night. If you’re only making minor adjustments to the exhaust note, choosing compliant aftermarket parts is more reliable—you’ll still enjoy the thrilling driving experience without breaking any rules. In short, registering your modifications brings peace of mind while legally enjoying the charm of a new exhaust sound.

As a repair technician, I've seen too many people dive straight into modifying their exhaust for a better sound, only to end up with problems and bring their cars to the shop. Filing for modification isn't just bureaucracy—it's a legal requirement. Vehicle modifications must comply with safety standards, or the risks on the road are significant. In our line of work, every time an exhaust system is changed, we advise owners to first register the modification with the vehicle management office, bringing all necessary documents to detail the changes. Only after passing inspection is it considered legal. Otherwise, at best, you might fail the annual inspection, have to revert the changes, and face a fine of one or two thousand yuan. At worst, it could affect insurance claims. I've even handled cases where excessively loud exhausts led to noise complaints from neighbors, resulting in the car being impounded. So, when changing your exhaust, don't just think about how cool it sounds—consider the practical implications, like keeping noise within legal limits and choosing parts compatible with the original setup. Filing in advance saves a lot of hassle and protects your driving safety.

Modifying the exhaust sound requires filing with the authorities, which is a basic regulatory requirement. Failure to comply will result in consequences. For example, unauthorized modifications without filing may lead to fines or orders to restore the vehicle to its original condition. I recommend consulting the local vehicle management office first. They will inform you of the specific process: bring your ID card and vehicle registration certificate to apply for the modification filing, then undergo a noise test to ensure it meets national standards. Most regions limit noise levels to 70-80 decibels; exceeding this will result in failure. This approach avoids trouble and legalizes the modification.


