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fuel efficiency

American

[fyoo-uhl-i-fish-uhn-see] / ˈfyu əl ɪˌfɪʃ ən si /

noun

the quality or degree of being fuel-efficient or of minimizing the amount of fuel needed to function.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Meanwhile, improved fuel efficiency means that people aren’t pumping as much gasoline as before.

From The Wall Street Journal • Mar. 31, 2026

Egan is unhappy to see gas prices rising after she just bought a bigger car—an SUV with worse fuel efficiency than her old Honda Civic—so she can help drive her grandchildren around.

From The Wall Street Journal • Mar. 6, 2026

Transportation Secretary Sean Duffy is the father of nine, and in December he offered an odd defense of the Trump administration lowering fuel efficiency standards.

From Salon • Feb. 16, 2026

Since 2009, the endangerment finding has opened the door to government policies that have boosted fuel efficiency and the number of electric cars on the road.

From BBC • Feb. 13, 2026

The loss through the water jacket of the average automobile power plant is over 50 per cent. of the total fuel efficiency.

From Aviation Engines Design?Construction?Operation and Repair by Pag?, Victor Wilfred

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023