No, DO NOT cover a wet vehicle or allow the cover to dry on a wet vehicle. Coverking car covers are designed to prevent the vehicle’s paint and interior fading caused by sunlight but they also prevent sunlight from drying the car quickly. The outside of a car cover is usually waterproof but the inner lining generally is not. It is normal for water or moisture to reach underneath a car cover when left in the rain or snow for an extended period, this can promote the formation of mold or bacteria. In addition, if water on the car contains dirt or debris, spreading the cover over the car can rub it in and scratch the paint. Moisture trapped under the car cover can also leave water spots on the vehicle.