
Fender is the same as mudguard. Below are the specific details about the car mudguard: 1. Features of the mudguard: The mudguard is a covering part on motor vehicles and non-motor vehicles, acting as an outer shell. It complies with fluid dynamics, reducing the drag coefficient and making the vehicle run more smoothly. 2. Front and rear mudguards: The front mudguard is installed at the front wheel and must ensure the maximum space for the front wheel's rotation and movement. The rear mudguard does not have the issue of wheel rotation friction. For aerodynamic considerations, the rear mudguard is slightly arched and protrudes outward. 3. Replacement instructions: The side panel of the car body is a single piece from the A-pillar to the rear mudguard. The rear mudguard is directly welded by the manufacturer using original welding technology. Neither auto repair shops nor insurance companies recommend replacing it casually. However, some car mudguards are independent, especially the front mudguard, because the front mudguard has a higher chance of collision, and independent assembly makes it easier to replace the entire part.

Let me, a veteran driver with 20 years of experience, tell you: the fender is what we commonly call the 'wheel arch,' that curved metal panel above the wheel! Northern auto repair shops usually call it the 'wheel arch,' while southern 4S shops prefer 'fender,' but they refer to the same thing. The front wheel area is especially prone to scrapes—last time I reversed without noticing the curb and dented it right in. This panel not only blocks mud and water but also connects to the wheel well and liner. If it gets deformed, fix it ASAP, or else rainwater and mud will splash right into the door seams. Don’t be intimidated by technical terms when repairing—just say 'fix the curved steel panel above the wheel,' and the mechanic will understand.

In the sheet metal shop, we deal with this part every day: the 'fender' is the industry slang, while the official name on the vehicle conformity certificate is 'wing panel', just like how antifreeze is formally called coolant. It comes in two structures: the front fender and the rear fender. The one near the front wheel is independently detachable, secured by three bolts under the side mirror—if it gets hit, you can just replace it with a new part. The one near the rear wheel is integrally formed with the car body; if it gets dented, it requires cutting and welding, costing three times more in labor. Here’s a handy trick to identify it: that curved panel between the door and the wheel is definitely it!

Having disassembled over thirty cars, I can responsibly say that the fender and wing panel are just two names for the same component, like the difference between pineapple and its variant. The design holds significant secrets: high-end cars use aluminum alloy fenders for weight reduction, ordinary cars use galvanized steel for rust prevention, and I’ve even seen budget cars use engineering plastics. This panel serves three crucial functions: first, aerodynamic airflow guidance; second, preventing stones thrown up by tires from damaging the paint; and third, absorbing collision energy through deformation during accidents. Next time you wash your car, remember to dry the drainage holes on its inner side, or accumulated water and mud can corrode the fastening clips.


