
The key lies in the repair method - if done correctly, there won't be color difference. Here are three effective methods: 1. Toothpaste for scratch removal: When shiny car paint accidentally gets scratched, don't panic. First clean the scratch with water, then gently rub it repeatedly with a small amount of toothpaste until the scratch fades or disappears, then wipe dry with a damp cloth. This also creates a protective barrier against rust, especially effective for white car paint. 2. Nail polish for scratches: Similar to the toothpaste method, use nail polish matching your car's color. Apply evenly on the scratch and let it dry. The liquid polish fills the scratch and creates a barrier between the metal body and air, preventing oxidation and rust. 3. Touch-up pen: Ideal for small scratches and scuffs. First use ultra-fine sandpaper dipped in water to gently remove rust spots, always sanding in straight lines in one direction. After thorough cleaning, apply a base coat. For fresh scratches, clean and apply base coat directly. While not as effective as professional repair, this method prevents rust expansion for minor or inconspicuous damages.

My car got a big scratch last time, and after getting it repainted at the 4S shop, I noticed a slight color mismatch, especially obvious under sunlight. This is because the car's paint gradually fades and oxidizes with age, making it hard for new paint to match perfectly. However, the advantage of 4S shops is their use of original formulas and equipment, usually resulting in negligible color differences, far better than street shops. It's advisable to communicate your concerns with the technician beforehand, test a small sample, and after completion, don’t rush to leave—walk around the car to check under different lighting angles. For daily maintenance, remember to wash and wax your car regularly to protect the original paint, reducing aging and color mismatch risks, keeping your beloved car looking as bright and new as ever.

I hit a road spike just a few months after buying my new car and reluctantly chose the 4S store for repainting, mainly because I heard their quality was reliable. After the job was done, under the garage lighting, the newly painted area showed minimal color difference—almost unnoticeable—though the rest of the car's body looked slightly aged in contrast. The technician explained that car paint changes color over time, and while they strive to match the new paint, achieving an exact match is impossible. Overall, the 4S store demonstrated high professionalism, proving that choosing the right place reduces the likelihood of noticeable color differences. Though the cost was higher, it was worth the peace of mind. To prevent issues, I plan to wash my car regularly to protect the paint from oxidation and request a color chart comparison during future touch-ups.

Having worked in the automotive industry for years, I've seen quite a few cases of color mismatch in 4S shop paint repairs, mostly due to aging car bodies or technician technique issues. While original factory paint formulas are consistent, slight variations can occur between batch numbers, and differences in spray environments may lead to minor color discrepancies. However, 4S shops have advanced equipment that can minimize such risks. I recommend car owners wash their vehicles thoroughly before paint repairs to reduce interference, choose reputable shops where technicians carefully match colors, and avoid inspecting the work in dim lighting to prevent misjudgment. Maintaining the original paint's shine is crucial, so don't slack on daily maintenance.

My SUV has been in use for five or six years, and I always feel more at ease getting it serviced at the 4S shop. After the last touch-up for scratches, the color difference was almost unnoticeable at first glance, but upon closer inspection, there was a slight uneven transition. The technician explained that natural wear and tear on the car body makes it difficult for new paint to perfectly match the original. However, compared to roadside shops, 4S shops offer more reliable services with a much lower chance of color mismatch. Although it might be a bit more expensive, it's worth it—safety comes first, especially for family trips. After the touch-up, I always check the paint under different lighting conditions and recommend others to maintain their car's paint regularly to extend the vehicle's lifespan and minimize concerns about color differences.


