To clean your car, you can either opt for a simple body and wheel clean, or you can choose to clean both the interior and exterior of your car. Before you begin cleaning the exterior, make sure the body of your car is cool and in the shade. Use specially formulated cleaners to clean the body and wheels of your car. To clean the interior, remove the floor mats and throw away trash. Vacuum the interior and use a foam cleanser to clean the carpet and upholstery. Finish cleaning your car by using a window cleaner to clean the inside and outside of your windows.