Is it better to open or keep the car windows closed when the car is exposed to the sun?

[VonEmmanuel]

In summer, when the car is parked outside and exposed to the sun, it is better to open the windows slightly. Opening the windows allows for ventilation, helps remove odors, and can lower the temperature inside the car, but safety must be ensured. Below are some related points: 1. Hazards of sun exposure: The biggest impact of parking a car under the sun is the accelerated aging of the car, especially the plastic parts, rubber components, and paint surface. Although most parts of the car have undergone aging resistance tests. 2. Methods to remove formaldehyde: Activated carbon is the most commonly used method for removing formaldehyde in daily life, and it is cost-effective. However, activated carbon tends to reach adsorption saturation quickly, and once saturated, it needs to be replaced or aired out. Another important point to note is that if the amount of activated carbon is insufficient, it won’t have much effect on removing formaldehyde from the interior.