CARS.COM — Each year the EPA compiles its Fuel Economy Guide to educate car buyers on fuel-efficient vehicles. The following hybrid and alternative-fuel cars, trucks and SUVs have the best fuel economy within the listed vehicle classes. See the best mileage for gas-only-powered cars here. Compare estimates for all vehicles at fueleconomy.gov.
Each class includes the 2018 diesel vehicles with the best mileage estimates in that category. All segment ranges and averages include both automatic- and manual-transmission cars.
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