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GMC Sierra 1500 MPG


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Model Year Body/Powertrain MPG  
2014 2014 4dr Crew Cab 5.5ft bed 420-hp 6.2L V8 8-sp shiftable automatic 4WD w/low range 18.95
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With the 420-horsepower 6.2L V8 engine, 10-speed shiftable automatic transmission, and four-wheel drive w/low range, the 2014 GMC Sierra 1500 has been averaging 18.95 MPG (miles per gallon).

The 2014 GMC Sierra 1500s in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 75 percent of the miles driven). The rest of the miles were in the suburbs (0 percent), in the city (0 percent), and in heavy traffic (0 percent).

In addition, the average 2014 GMC Sierra 1500 in this analysis was driven on hilly terrain with a medium foot and the AC not used at all.
2014 2014 4dr Crew Cab 5.5ft bed 315-hp 5.3L V8 6-sp shiftable automatic RWD 25
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2014 GMC Sierra 1500 Gas Mileage (MPG)

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the GMC Sierra 1500's real-world MPG based on how and where you drive a car.