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Fuel Economy and Driving Range

Alexander Stoklosa, Eric Stafford
Photo credit: Brad Fick - Car and Driver

From Car and Driver

Fuel Economy and Driving Range Rating:

Photo credit: Car and Driver
Photo credit: Car and Driver

Both of the Mazda 6’s four-cylinder engines have competitive EPA ratings. What’s even more impressive is that the turbo model hit 36 mpg in our real-world highway fuel economy test, surpassing its EPA highway estimate by 5 mpg. This performance is good enough to put the turbocharged model at the top of the competition in both observed highway fuel economy and highway driving range. The Mazda 6 with the base engine that we tested previously delivered 37 mpg, a 2-mpg advantage versus its EPA highway rating.

What’s New for 2018?

Despite the addition of cylinder deactivation for 2018, the base four-cylinder engine and six-speed automatic transmission have the same EPA estimates as before. However, the manual version lost 1 mpg on the highway and 1 mpg combined. While we haven’t tested a stick-shift Mazda 6 on our fuel loop, the new turbocharged engine and six-speed automatic delivered impressive fuel efficiency.

Fuel Economy Ratings Compared

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Test Results: Highway Fuel Economy

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Test Results: Highway Range

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2017 Mazda 6

Technically, the Mazda 6 has three sets of EPA fuel-economy estimates. Automatic-transmission models are rated for 26 mpg city, 35 mpg highway. Our Grand Touring test car was equipped with Mazda’s optional regenerative-braking setup, called i-Eloop, which increases the engine’s efficiency by only powering the onboard electrics and charging the battery during deceleration or coasting. That’s good enough to improve the automatic-equipped 6’s EPA ratings by 1 mpg in the city. The i-Eloop system isn’t available on 6s equipped with the manual transmission, which are rated for a lower 24 mpg city, 34 mpg highway.

Fuel Economy Ratings Compared

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Photo credit: Brad Fick - Car and Driver

Test Results: Highway Fuel Economy

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The 6’s 600-mile cruising range sits near the top of the class, outshone only by Volkswagen’s freakishly fuel-efficient four-cylinder Passat, which is capable of a lofty 720 miles between fill-ups.

Test Results: Highway Range

Photo credit: Car and Driver

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