Fender is derived from a wagon and refers to a wheel cover protecting from dirt or other road waste. As the wheels are integrated into the car body in today's cars, the fenders are also part of the exterior panel. High-performance vehicles have inflated fenders to fit the wider tires and emphasize the bold design. The rear part of the side outer panel refers to the upper part of the rear tire of the outer panel constituting the body. It includes the rear fender, and at the same time, is connected to the C-pillar and the rear panel of the body. Usually, the fuel inlet is installed here.