What does this dial provide information on?

Driving theory illustration: What does this dial provide information on
  1. Fuel level.
  2. Oil Level.
  3. Gearbox revolution.
  4. Engine revolution.

Correct Answer

Engine revolution.

Explanation: The rev counter measures the speed of the engine; in revolutions per minute. Generally; the higher the revs; the more fuel the engine is using; so drivers should keep an eye on the rev counter to help drive in a more eco-friendly manner.

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