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GMC Sierra 1500 Fuel Economy (L/100km)

L/100km Number of Vehicles
9 liters per 100 kilometers 1 vehicles
10 liters per 100 kilometers 1 vehicles
11 liters per 100 kilometers 1 vehicles
12 liters per 100 kilometers 0 vehicles
13 liters per 100 kilometers 1 vehicles
14 liters per 100 kilometers 1 vehicles
15 liters per 100 kilometers 0 vehicles
16 liters per 100 kilometers 1 vehicles
17 liters per 100 kilometers 1 vehicles
Model Year Body/Powertrain L/100km  
2015 2015 4dr Crew Cab 5.5ft bed 420-hp 6.2L V8 8-sp shiftable automatic 4WD w/low range 11.2
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With the 313 kilowatts 6.2L V8 engine, 10-speed shiftable automatic transmission, and four-wheel drive w/low range, the 2015 GMC Sierra 1500 has been averaging 11.2 L/100km (liters per 100 kilometers).

The 2015 GMC Sierra 1500s in this analysis were driven mostly on the highway at an average speed of 65 kilometers per hour (about 95 percent of the kilometers driven). The rest of the kilometers were in the city (5 percent), in the suburbs (0 percent), and in heavy traffic (0 percent).

In addition, the average 2015 GMC Sierra 1500 in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
2015 2015 2dr Regular Cab 6.5ft bed 355-hp 5.3L V8 6-sp shiftable automatic 4WD w/low range 13.23
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2015 GMC Sierra 1500 Gas Mileage (L/100km)

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 L/100km based on how and where you drive a car.