What causes small rust spots on cars?

[VanAlexandra]

That is because the paint on the car's surface has aged, allowing water to penetrate through the paint and oxidize with the metal, causing rust. Repainting or polishing followed by regular waxing can resolve the issue. Below is an introduction to related content: 1. Smooth and glossy paint surface: Polishing utilizes physical cutting methods combined with abrasive compounds as a medium to remove unevenness on the paint surface, achieving a smooth and glossy finish. 2. Polishing: Polishing is a process that removes surface irregularities from the paint. By eliminating some of the paint layer to create a more even surface, it increases the reflection angle of the paint, making it appear brighter and shinier.