Question

define fuel efficiency ( best answer will be marked as brainiest so fast )​

Answer 1

Explanation:

That proportion of energy released by a fuel combustion process which is converted into useful work. For vehicles, it is measured in miles per gallon or kilometers per liter.

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Answer 2

Answer:

Hi mate

fuel efficiency is that proportion of energy used by any vehicle for working .

it is measured in kilometers per litre.