Is the white showing through on a black car the primer?

[OIris]

Black car showing white is the primer, because the primer color is different from the surface paint color. In addition, there are the following methods to determine if the car paint has exposed the primer: Scratch depth: The primer usually refers to the electrophoretic layer and intermediate coat at the bottom of the paint. If the scratch reaches these two layers, it indicates the scratch is very deep. Color observation: The primer color is different from the body paint color. If a different color is visible in the scratch, it definitely means the primer is damaged. Unrepairable scratches: Some car owners may try to repair scratches by washing, waxing, or polishing, which can be effective. However, if the scratches still cannot be repaired, it indicates the primer has been scratched.