How to Remove Car Rust Spots?

[VonKiara]

1. Using Toothpaste: The toothpaste you use daily is also a great cleaning tool. You can apply toothpaste to a damp towel (but make sure the towel isn't too wet and needs to be wrung out), then rub back and forth on the rusted area. After cleaning, use another clean damp towel (this towel should also not be too wet and needs to be wrung out) to wipe the area clean before drying it again. This is also a good method for using grease. 2. Using Water Sandpaper: If the rust spots are not very large and the adhesion is not too strong, you can gently sand them with water sandpaper and water. However, if the rust spots are too large and strongly adhered, you will not only need water sandpaper and water to sand the car body but also need to use primer or a touch-up pen to repair the sanded area afterward. 3. Going to a Car Beauty Shop or 4S Store for Cleaning: Some rust stains are very stubborn, and you might be afraid of damaging the car's surface by handling them yourself. Therefore, it's recommended to go to a car beauty shop or 4S store for cleaning.

[VanHailey]

I've always been a fan of DIY car maintenance and have dealt with rust spots several times. The first step is to sand the rusted area, starting with coarse sandpaper and gradually moving to fine grit, which effectively removes surface rust. For deeper rust, a rust converter spray might be necessary—it turns rust into a black protective coating, ideal for small spot repairs. Afterward, thorough cleaning is essential before applying primer and color-matched topcoat to prevent further rusting. In terms of tools, gloves and safety goggles are must-haves, and good garage ventilation is crucial. I recommend regular body inspections, especially in humid or salty environments. Remember, improper handling can worsen the problem, so careful operation is key. The whole process is low-cost but time-consuming, making it perfect for weekend projects.

[LaMaddox]

From my professional perspective, rust treatment depends on the severity. Minor surface rust can be easily addressed with commercially available rust removers or sprays—clean the area, apply the product, wait for the chemical reaction, then wipe away the rust with a cloth. However, if the rust has penetrated the internal metal, it's best to visit a professional repair shop. They employ specialized equipment like sandblasters to remove deep rust, followed by re-welding and repainting. Cost-wise, DIY methods may only cost a few dozen yuan, while professional services could range from hundreds to over a thousand, depending on the affected area. More importantly, rust compromises the vehicle's structural integrity, so timely treatment prevents safety hazards. Regular waxing after car washes also helps prevent rust formation.

[TylerDella]

I've tried rust stain removers available near my home, simple and effective. Just buy a bottle of spray, aim at the rust spots and spray a few times, wait until it turns white and then gently wipe it off, then rinse off the residue. This method is cost-effective and labor-saving, suitable for beginners, but only for small spots. For bigger issues, you'll need to use sandpaper or consult a technician. For prevention, avoid parking in damp areas and wash the car body frequently to reduce rust. Experienced friends say adding a protective film is even better.