Why is there basically no color difference when a 4S shop repaints?
2 Answers
Here are the reasons why there is no color difference when a 4S shop repaints: 1. Remove rust: Completely remove rust, dirt, and grease from the paint surface. You can first use very fine water sandpaper dipped in water to gently sand away rust spots, then thoroughly clean to ensure the rust does not spread. 2. Repainting: Apply tape around the scratches to prevent the touch-up paint pen from coloring undamaged areas. For better results, you can also use polishing compound to smooth out scratches and the paint surface, enhancing the adhesion of the paint. Use the fine brush tip that comes with the touch-up paint pen to carefully dab along the car body's scratches until fully covered. If the surface is still not smooth enough, after the paint has dried for about a week, you can use fine polishing wax to level it out.
With years of experience in car repair and handling numerous paint touch-up cases, I've noticed that 4S shops rarely have color mismatches. This is because they use original manufacturer-matched paint formulas, sourced directly from the car brands themselves, avoiding third-party products. Equipped with high-end devices like computerized color-matching systems, they can scan the car's paint color and precisely replicate the color code, eliminating manual errors. Additionally, their staff undergo rigorous training, mastering techniques for even application and drying control to ensure seamless blending between old and new paint. Another key factor is quality control—post-touch-up, instruments are used to measure color deviation, with rework mandated for subpar results. In contrast, regular shops often rely on outdated equipment and generic formulas, leading to discrepancies. For long-term aesthetics and peace of mind, I recommend prioritizing 4S shops—they save both hassle and money over time. In essence, their systematic approach, combining technology and expertise, is something even seasoned professionals like myself admire.
