system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does fixing a dent in a bumper require the removal and repainting of the entire bumper?
gpt
The main reason is that when the paint is damaged it’s not recommended to paint only one area. The paint work will be extremely obvious. Typically when painting anywhere on a car, you need to paint surrounding panels as well. It’s called blending and there is no really good way to do it in just one area. Bumpers however are the exception as they are typically plastic versus the other areas on the car which are painted metal. The bumpers on colored cars are almost always a shade or two different from the rest of the car.