What Causes Rust Spots on New Cars?
2 Answers
The reasons for rust spots on new cars are: 1. Paint aging, where moisture penetrates the paint and oxidizes with the metal, causing rust; 2. Rainwater contains acidic substances and carries iron particles from the air, which land on the car and form rust spots; 3. Issues related to the storage of new cars. The methods to deal with scratches on the car are as follows: 1. Hairline scratches: Hairline scratches can generally be removed by polishing or applying a rubbing compound, usually requiring only gentle wiping to make the scratches disappear. 2. Light scratches: For light scratches, a tube of toothpaste is sufficient. Toothpaste is very effective for shallow scratches that do not damage the car's primer. Especially for traces left by other vehicles during minor collisions or residues from adhesive products, most can be completely wiped away. 3. Moderate to deep scratches: Moderate and deep scratches cannot be repaired by rubbing. For small dents not exceeding 5mm, they can be leveled with filler putty before repainting.
I can understand your concern about rust spots on a new car. On the production line, workers sometimes handle parts hastily, leading to improper surface cleaning or too-thin rust-proof coatings, especially at weld points or corners. During transportation, if the new car is stored outdoors or passes through coastal areas, high humidity or salt can quietly seep into metal gaps. Pre-delivery quality inspections should catch these issues, but oversights are inevitable in mass production. I've personally encountered similar situations and advised friends to contact the manufacturer for resolution—it's often covered under warranty, allowing for free repairs. Regularly washing and drying the car body can also prevent rust from spreading, as prevention is always better than cure. When purchasing a car, it's wise to carefully inspect the paint and chassis corners to address any issues early on.
