How do I remove a bumper sticker from my car?
According to several automotive detailing Web sites, it’s best to try to soften the sticker’s adhesive with heat from a hair dryer. Once the adhesive softens, you can spray a light lubricant over the sticker’s surface and let it soak in.
Then, you should be able to slowly peel back the sticker. To remove residue or adhesive, use a plastic spatula or something similar. Avoid using a metal scraper or blade, which could scratch the paint. To get rid of excess adhesive, wipe the area with rubbing alcohol and a clean cloth to dissolve it.