Is it necessary to repair scratches on the bottom of the bumper?

2 Answers
VanWeston
07/29/25 6:27pm
It is not necessary to repair scratches on the bottom of the bumper. The bumper itself is made of plastic, so when it gets scratched, even if the primer is exposed, it will not cause the paint to rust. Toothpaste repair method: When the front bumper is scratched, using toothpaste for repair is very effective because toothpaste itself has a polishing function, which is equivalent to applying a layer of wax to your car, thus achieving a good repair effect. Touch-up paint pen repair method: Using a touch-up paint pen can cover up some small and shallow scratches, making the marks less noticeable. Although there is still a certain gap compared to the original factory paint (color difference), and the durability is certainly not comparable to the original factory paint—after all, the touch-up pen is only for local paint repair—the overall effect is still relatively good.
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DeArthur
08/14/25 11:20am
I've been driving for almost 10 years and seen all kinds of scratches. For those minor scrapes on the bottom of the bumper, I really don't think it's necessary to rush to fix them. Most bumpers are made of plastic, so scratches won't rust or affect safety. My own car's rear bumper has been scraped several times, and I've never bothered to fix it - it still handles long trips just fine. Repairing it would cost at least a few hundred yuan, and replacing it would run into the thousands. Wouldn't it be better to save that money for maintenance supplies? Just wait until there are more scratches and deal with them all at once. After all, you can't see the underside of the car while driving, so no need to stress yourself out about it.
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