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fuel efficiency

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

noun

  1. 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.

Other jets use “bleed” air from the engines, which reduces fuel efficiency.

From Barron's • Jun. 8, 2026

Slower speeds on the highway can reduce drag and increase fuel efficiency, and slowing down by even a few miles an hour can save truckers hundreds of dollars a week.

From The Wall Street Journal • Jun. 2, 2026

The challenge is balancing fuel efficiency, traction, and durability.

From Science Daily • May 13, 2026

"Second, the car industry went through a major transformation. The amount of oil we use for driving 100 kilometres is halved because of the efficiency improvement in cars, the fuel efficiency."

From BBC • Mar. 20, 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

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