What Causes Yellow Spots on the Interior Roof Lining of a New Car?
2 Answers
Yellow spots appearing on the interior roof lining of a car may be caused by slight water seepage from the roof. It is necessary to promptly check whether there is any water seepage or leakage on the car roof, and then use glue for thermal bonding to remove the stains. Below are specific methods for dealing with moldy car interiors: Knitted Velvet Interior: First, use a vacuum cleaner to remove dust and mold from the surface of the interior, then clean it with a specialized car interior cleaner. After spraying, the interior can be dried with a blower, or the car can be driven into the sun to dry. Leather Interior: Wipe the interior with a cloth and cleaning agent, then let it air dry naturally. Alternatively, you can turn on the car's heating mode to dry it. Genuine Leather Interior: Genuine leather interiors require regular maintenance. When cleaning, use neutral or alkaline cleaners and avoid using highly irritating mold removers to prevent corrosion of the interior. After cleaning, let it air dry naturally (avoid exposing the car to direct sunlight).
I noticed yellow spots on the roof lining of my new car not long after I bought it, which puzzled me at the time. From my personal observation, this is likely caused by moisture issues. During transportation or storage of new cars, if the environmental humidity is high, the roof material can easily absorb moisture, and over time, it can lead to mold spots or bacterial growth, forming yellow stains. Another possibility is contamination during production, such as dust, oil stains, or chemical residues from the assembly line, compounded by poor ventilation inside the car accelerating oxidation. I recommend first checking if the spotted area has a damp or musty smell. If it's caused by moisture, treat it with a mild cleaner as soon as possible to prevent the spots from spreading. Such issues are somewhat common in new cars, especially in rainy southern regions. Regularly checking the dryness inside the car can prevent problems before they worsen—don’t wait until it deteriorates. In short, poor environmental control in new cars can easily lead to these unexpected minor issues, so maintenance is key.
