Why do the exterior plastic trims and rubber seals on my C-Class deteriorate o r crack?

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Why do the exterior plastic trims and rubber seals on my C-Class deteriorate o r crack?

Sun exposure, heat, and environmental pollutants cause fading, cracking, and brittleness of plastic trims and rubber seals, affecting the car’s appearance and water sealing capability.

Talha Kyanii asked on 10 Oct 2025 16:57:45 pm

1 Answer

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Talha Kyanii - on 10 Oct 2025 16:58:35 pm

Constant exposure to sunlight and heat causes plastic and rubber parts to dry out, fade, and crack.

Environmental pollutants and dust also contribute to deterioration.

Use protectants designed for plastic and rubber to keep them supple and resistant to UV damage.

Regular cleaning and conditioning slow down aging.

Replace severely cracked o r damaged trims and seals to maintain aesthetics and water-tightness.