How do you Remove tree sap from car?

Mr. Clean Magic Eraser works amazingly, so tiny scratching or need to re wax. You can also try rubbing alcohol, mineral spirits, acetone free nail polish remover, I've also heard Windex. All of these can dull your finish, so be sure to re-wax immediately.

Always test a strong chemical on a location where it won't be noticable if it discolors the paint or trim.

Try WD40 and a soft cloth. Spray the WD40, let it soak in for a minute, and wipe it off. Don't rub too hard, though. The longer the sap has been there, the harder it will be to remove it. And blemishing the finish may result.