What are the effects of long-term exposure of cars to sunlight?

[VanFelix]

The effects of long-term exposure of cars to sunlight are as follows: 1. Severe oxidation and aging of the car: The most affected part is the car paint. Prolonged exposure to sunlight reduces the gloss of the paint, making it appear dull and significantly aged. The color fades, leading to gradual peeling, cracking, etc. White cars may turn yellow, which is a clear sign of sun damage and weathering aging. 2. Interior aging: After the raw materials of the interior are exposed to high temperatures, some harmful substances are released, which is detrimental to the health of the driver and passengers. The components of the interior also age rapidly. Rubber parts and sealing rings inside the car age too quickly, leading to water leakage into the car and poor wiring, which can cause electrical leakage issues.

[VivienneLee]

As a seasoned driver, I think long-term exposure of the car to direct sunlight is a major issue. The paintwork tends to fade or darken, especially on dark-colored cars, as if scorched, and over time, fine lines and cracks appear. The interior is even worse—leather seats can harden and crack, plastic dashboards may warp and discolor, and sitting inside feels like entering a sauna, which is not only uncomfortable but may also release harmful gases, affecting health. Additionally, tire aging accelerates, with rubber becoming brittle, increasing the risk of blowouts, making summer long-distance driving particularly hazardous. I recommend parking in the shade whenever possible or using a sunshade to cover the roof. Regular waxing can help protect the paint and slow down damage—don’t wait until the problems become severe to fix them.

[McAllie]

From a chemical perspective, prolonged exposure to sunlight causes significant damage to vehicles. UV rays alter the molecular structure of car paint, leading to fading and peeling. Plastic interiors become brittle and prone to cracking due to thermal expansion and contraction. Window seals deteriorate, resulting in leaks. High temperatures also accelerate the evaporation of fluids inside the car, such as brake fluid and coolant, which can impair braking system efficiency. Rubber components underneath the vehicle, like tires and suspension bushings, lose elasticity, increasing wear and shortening their lifespan. To avoid sun damage, it's best to park in a garage or use sunshades, and regularly inspect and replace aging parts to prevent sudden failures.

[Penelope]

I pay special attention to the appearance of my car. After prolonged exposure to the sun, the exterior becomes dull, turning glossy surfaces into matte ones with faded patches. Dust and yellowing easily accumulate in the gaps of the car body, making it look unsightly. As for the interior, the fabric seats fade and become stiff, while the leather steering wheel gets slippery and uncomfortable under the sun. In summer, the car interior feels like a steamer, with a strong plastic smell and the air conditioning struggling to cool down. I usually park under trees or use a car cover for simple protection. After washing, I polish the car to restore its shine, which is hassle-free and helps maintain its value.