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How does car speedometer work?

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Answer:

Older cars have a cable, which is turned by a gear at the rear of the transmission, and this operates a mechanical speedometer. Modern cars have an electronic sensor in the gearbox which is linked by wire to an electronic speedometer.

First answer by Eggert. Last edit by Eggert. Contributor trust: 150 [recommend contributor ]. Question popularity: 9 [Recommended].

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