What Causes Plastic Rattling Noises Inside the Car on Bumpy Roads?

1 Answers
SanCooper
07/30/25 12:11am
Most rattling noises in the car when driving on bumpy roads are caused by the hardening and aging of the shock absorber top rubber. There is rubber at the connection points between the shock absorbers and the car body, known as the shock absorber top rubber. This rubber provides cushioning for the car body and reduces vibrations. Over time, the rubber ages and hardens, leading to rattling noises when driving over uneven surfaces. Additional information includes: 1. Antifreeze usage tips: It is best to use antifreeze year-round. Besides its antifreeze and cooling functions, antifreeze also has cleaning, rust removal, and anti-corrosion properties, reducing radiator corrosion and protecting the engine. Be sure to choose the correct color of antifreeze and avoid mixing different types. 2. Brake fluid usage tips: The functionality of the brake system is closely related to the brake fluid. When inspecting or replacing brake pads, discs, and other hardware, don’t forget to check if the brake fluid needs topping up or replacing.
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