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Does a diesel car have a cam belt or is it chain driven?
They could have either, but most engines today have chains following the spate of problems that occurred when most carmakers switched to belts to drive the camshafts in their engines. They went away from chains for a period because chains were more expensive than belts, and they were noisy, but belts deteriorated with time and when contaminated with oil and could fail if not replaced at regular intervals by owners who weren't aware of the need or chose to ignore it.
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