Will the car rust if the primer is exposed?
2 Answers
If the car's primer is exposed, it will rust. It is recommended to address the rust promptly. Methods to deal with rust are as follows: Replacement of parts: If the collision or scraping damages the chrome-plated parts, and there is visible damage, it is advisable to replace the parts to maintain the vehicle's appearance (aesthetics). Although such materials can be re-plated through electroplating, the cost for a single part is relatively high, making direct replacement more suitable. Polishing treatment: For minor scrapes that do not damage the primer, or even just small surface abrasions or marks left by scraping, polishing can be used as a treatment method. This can largely restore the original appearance.
I've noticed many car owners worry about whether exposed primer will lead to rust. Honestly, it absolutely will cause rust issues. A car's paint is a multi-layered structure, with the clear coat serving as the outer protective layer. While the primer has some rust-proofing properties, once exposed, direct contact with rain, air, and dust will gradually corrode the metal. During my time repairing cars, I often see scratches that aren't treated promptly develop rust spots within a month or two, spreading quickly. Deep rust can compromise the frame's strength and be costly to repair. If you notice scratches while washing your car, quickly cover them with a touch-up pen or rust-proof paint to prevent worsening. Alternatively, take it to a paint shop for a thorough fix to maintain the car's durability and appearance—it saves a lot of hassle in the long run.