Theory Test Practice Ireland

Question 421 · Car theory test

What can a driver do to maximise fuel efficiency while driving?

Pick an answer to test yourself.

Correct answer

Avoid carrying unnecessary weight.

Official explanation

The more extra weight in your vehicle, the more fuel you use. Using a roof rack or a roof box increases wind resistance, and this also increases fuel consumption – by as much as 15%. Remove roof racks and roof boxes when not in use.

Topic
Vehicle maintenance
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This question also appears in the motorcycle theory test.

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