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GMC Sierra 1500 Fuel Economy (L/100km)

 

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Model Year Body/Powertrain L/100km  
2018 2018 4dr Crew Cab 5.5ft bed 420-hp 6.2L V8 8-sp shiftable automatic 4WD w/low range 10.7
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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 2018 GMC Sierra 1500 has been averaging 10.7 L/100km (liters per 100 kilometers).

The 2018 GMC Sierra 1500s in this analysis were driven mostly on the highway at an average speed of 70 kilometers per hour (about 80 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 2018 GMC Sierra 1500 in this analysis was driven on flat terrain with a light foot and the AC on only some of the time.

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2018 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.