Are Cars More Afraid of Rain or Sun Exposure?

[AustinAnn]

Cars are more afraid of sun exposure. The most damaging factor to the paint layer is ultraviolet (UV) radiation. Under UV exposure, the paint layer oxidizes, making the car body appear as if covered in chalk. UV rays also oxidize the clear coat and base paint layers commonly used in modern new cars. Here are the specific details: Rain damage: In heavily polluted urban areas, the air is filled with large amounts of sulfur dioxide, nitrogen oxides, and suspended particles. When mixed with rainwater, these form acid rain that falls on the car body, corroding the paint surface. Prolonged exposure to such corrosion can cause the car's paint to lose its luster, age, and even crack, so it's advisable to rinse the car after rain. Sun exposure damage: Prolonged sun exposure accelerates the oxidation of the car's paint, especially for white cars, which may turn yellow and look aged. Additionally, sun exposure damages the leather materials inside the car, causing significant harm both inside and outside the vehicle.