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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 315-hp 5.3L V8 6-sp shiftable automatic RWD 25
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With the 355-horsepower 5.3L V8 engine, 6-speed shiftable automatic transmission, and rear-wheel drive, the 2014 GMC Sierra 1500 has been averaging 25 MPG (miles per gallon).

The 2014 GMC Sierra 1500s in this analysis were driven mostly on the highway at an average speed of 63 miles per hour (about 85 percent of the miles driven). The rest of the miles were in the city (10 percent), in heavy traffic (5 percent), and in the suburbs (0 percent).

In addition, the average 2014 GMC Sierra 1500 in this analysis was driven on flat terrain with a light foot and the AC on most or all of the time.

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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.