
The plastic film on the sunroof should be removed. The specific reasons are as follows: 1. These plastic protective films are designed to protect the interior components of the car before it is sold. However, once the car is purchased and starts being used, the film should be promptly removed. Otherwise, the release of gases from the new car's interior will be hindered, prolonging the duration of unpleasant odors inside the vehicle. 2. Some manufacturers use low-quality plastic films that contain large amounts of industrial adhesives, which are a major source of formaldehyde pollution. These films can release significant amounts of formaldehyde, benzene, and other harmful substances. Formaldehyde, benzene and its derivatives, TVOC, etc., are common pollutants in the car's interior environment. These substances are toxic, and excessive inhalation by humans may lead to poisoning.

The first thing I did after the car was to remove the plastic film from the sunroof. It's a protective layer against scratches during factory transportation and serves no purpose after delivery. Leaving it on would affect the sunroof's light transmission, making it appear foggy while driving. Under summer heat, the plastic film softens and deforms, with edges curling up in an unsightly manner. The biggest hassle is that over time, the film accumulates dust and water stains, making cleaning even more labor-intensive. After removal, a quick wipe with glass cleaner instantly restores the sunroof's clarity, brightening the interior light as well. This film is designed as a one-time use item and offers no actual heat insulation or protection.

From a safety perspective, this plastic film must be removed. The biggest hazard of leaving it on is reduced visibility, especially during rainy weather or nighttime driving, as the film causes light diffusion, making it difficult to see outside clearly. I've seen cases where people didn't remove the film for two years, resulting in yellowing and bubbling. Even worse, when the film ages under sunlight, it releases chemical odors, which become noticeable when opening the sunroof for ventilation. The curled edges of the plastic film also accumulate dirt and dead insects, making cleanup ten times more troublesome than simply removing the film. Sunroofs already have a special UV-resistant coating, so keeping the plastic film is completely unnecessary.

As someone who uses the car daily, I'm used to handling this on the day I pick up the vehicle. The plastic protective film is different from a screen protector—the sunroof's curvature makes it hard to apply smoothly. Leaving it on can cause bubbling and warping under direct sunlight, and rainwater can accumulate in the film gaps during rainy days, leading to mold spots. After peeling it off, I simply spray some neutral cleaner and wipe the glass—the whole process takes just two minutes. Modern car sunroof glass already has explosion-proof functionality, so that thin plastic film doesn't provide additional protection. Don't feel too attached to the brand-new state—peeling it off promptly is the right way to use your car.

I can relate to this issue. Once when I borrowed a friend's new car, I noticed the plastic film on the sunroof caused light refraction, creating double images in the rearview mirror. In fact, if this film isn't removed within three months, problems will arise: in the humid southern climate, moisture accumulates under the film causing fogging, while in northern winters, frost forms on the film severely affecting visibility. Cleaning after removal is simple - just use a microfiber cloth dampened with water and wipe in circular motions. Car manufacturers add this film purely for scratch protection during transportation, just like you'd remove protective foam from a new TV. The real key is regularly checking the sunroof's rubber seals after removing the film.

I recommend deciding based on the parking environment. If the car is frequently parked under direct sunlight, leaving the plastic film on can cause it to soften and leave adhesive residue on the glass due to high temperatures, making it difficult to clean later. In areas with heavy rainfall, it's even more important to remove the film promptly, as rainwater can seep into the edges of the film, leading to water accumulation and mold growth. For cars parked in underground garages for short periods, the film can be left on for a few extra days, but it should still be removed within the same month of purchase. When removing the film, peel it off following the curvature of the glass to avoid damaging the seals. After removal, maintain the sunroof with glass cleaner once every quarter to ensure optimal transparency. Don't wait until the film turns yellow or cracks to regret not handling it earlier.


