It depends on the damage of the bumper. If it is not too serious, it can be repaired. If it is serious, you can exchange it for a new one. The following methods are used to check the damage degree of bumper:

1. Look at the material of the rear bumper: If the rear bumper is made of plastic, it can be repaired and painted by welding to restore its original appearance.

2. Carbon fiber material: It can also be repaired, but the repair equipment made of this material is special, which is different from plastic welding torch, and it is difficult to repair and the effect is average. Usually the rear bumper made of this material is basically bought new.

3. Look at the wear and tear of the bumper: if the wear and tear is too large, or the cost of restoring the original state is close to the price of the original parts, then it is meaningless to repair the bumper by the above method. It is suggested that you can directly buy original accessories to solve the problem.