A car wash, or auto wash, is a facility used to clean the exterior, and in some cases the interior, of cars. Car washes can be self-service, full-service (with attendants who wash the vehicle), or fully automated (possibly connected to a filling station). Use brushes and power washing equipment to clean the exterior of vehicles. Dry and wax the exterior of vehicles after cleaning. Vacuum and shampoo car interior, including floor mats and seats. Clean windshield and windows. Check fluid levels.