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Definition of fuel efficiency noun from the Oxford Advanced Learner's Dictionary

fuel efficiency

noun
 
/ˌfjuːəl ɪˈfɪʃnsi/
 
/ˈfjuːəl ɪfɪʃnsi/
 [uncountable, countable]
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  1. an engine's ability to get energy from fuel
    • Increasing the fuel efficiency results in each kilometre of driving being cheaper.
    Topics Transport by car or lorryc1, The environmentc1
Check pronunciation: fuel efficiency

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