How to Fix Car Bumper Scratches ?

Bumper scratches and scuffs are unsightly, and alarmingly easy to get. You don’t have to cover your car with hard-to-remove bumper stickers to make it look better, however. Fixing damaged plastic bumpers involves grinding, sanding, sculpting and painting.

But it's worth the effort for repairs that would cost less than your deductible.
There oughta be a law: If there's a post in a parking lot—any post—it should be high enough to see when you're backing up. Unfortunately, the law we usually see applied is Murphy's, and the resulting body-damage repairs will cost just a few dollars less than your insurance deductible. And that's precisely the scenario we were faced with after trying to maneuver our trusty Honda Civic out of a tight space in a crowded mall parking lot.

A lot of people would first try to do what you shouldn't: Head to the local auto parts store for some el cheapo body filler and a can of matching spray paint. Surprise! The technology of auto body parts has changed—and you'll need a completely different array of supplies to repair painted plastic parts than you would use to repair sheetmetal. Fortunately, there are a number of companies making repair and refinishing materials for plastic bumpers, as well as plastic fenders and door skins made from sheet molding compound.