Why is car polishing so important for keeping your car looking its best? Vehicle cleaning readies the outer layer of your vehicle for waxing and fixing, disposes of scratches on the windshield, and eliminates toxins from surfaces made of or covered with chrome. It repairs minor cracks in the windshield of your vehicle. Overall, polishing your car makes it look better. In addition, if you decide to sell your vehicle, you can anticipate a higher resale value.