2014 Chevy Silverado, GMC Sierra V-6 Gas Mileage Official At 18 MPG City

Since our first drives of the 2014 GMC Sierra and Chevy Silverado, we've been waiting for GM to release fuel-economy figures for its excellent new V-6 engine.

They're out today, and in some official EPA ratings, they rival Chrysler's Ram 1500 and its high-economy special editions.

The 4.3-liter V-6 in both the Silverado and Sierra will be rated at 18 miles per gallon city--the same as the Ram 1500 HFE with an eight-speed automatic--and 24 miles per gallon highway, 1 mpg shy of the Ram's best figures. With four-wheel drive, the ratings slip to 17/22 mpg.

GM's six-cylinder puts out 285 horsepower in both the full-size trucks, and sports a maximum tow rating of 7,200 pounds--700 pounds higher than the best Ram V-6. It's also offered in all body styles, and those mileage ratings apply across all of them.

GM also offers its 5.3-liter V-8 with highway gas mileage of up to 23 mpg. A 6.2-liter V-8 is on the way, and while its fuel-economy figures haven't been released, GM does say some models powered by it will be able to tow up to 12,000 pounds.

For more information on gas mileage and everything else, read our 2014 GMC Sierra 1500 and 2014 Chevy Silverado 1500 reviews.

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