| 1 | 0 | 3 | 4 | 3 | 4 |
GMC Sierra 1500 Fuel Economy (g/100m)
| g/100m | Number of Vehicles |
| 5 gallons per 100 meters | 1 vehicles |
| 6 gallons per 100 meters | 0 vehicles |
| 7 gallons per 100 meters | 0 vehicles |
| 8 gallons per 100 meters | 0 vehicles |
| 9 gallons per 100 meters | 0 vehicles |
| 10 gallons per 100 meters | 0 vehicles |
| 11 gallons per 100 meters | 0 vehicles |
| 12 gallons per 100 meters | 0 vehicles |
| 13 gallons per 100 meters | 0 vehicles |
| 14 gallons per 100 meters | 0 vehicles |
| 15 gallons per 100 meters | 0 vehicles |
| 16 gallons per 100 meters | 0 vehicles |
| 17 gallons per 100 meters | 0 vehicles |
| 18 gallons per 100 meters | 0 vehicles |
| 19 gallons per 100 meters | 0 vehicles |
| 20 gallons per 100 meters | 0 vehicles |
| 21 gallons per 100 meters | 0 vehicles |
| 22 gallons per 100 meters | 1 vehicles |
| 23 gallons per 100 meters | 1 vehicles |
| 24 gallons per 100 meters | 0 vehicles |
| 25 gallons per 100 meters | 0 vehicles |
| 26 gallons per 100 meters | 0 vehicles |
| 27 gallons per 100 meters | 0 vehicles |
| 28 gallons per 100 meters | 0 vehicles |
| 29 gallons per 100 meters | 0 vehicles |
| 30 gallons per 100 meters | 0 vehicles |
| 31 gallons per 100 meters | 1 vehicles |
| 32 gallons per 100 meters | 0 vehicles |
| 33 gallons per 100 meters | 1 vehicles |
| 34 gallons per 100 meters | 0 vehicles |
| 35 gallons per 100 meters | 0 vehicles |
| 36 gallons per 100 meters | 0 vehicles |
| 37 gallons per 100 meters | 0 vehicles |
| 38 gallons per 100 meters | 0 vehicles |
| 39 gallons per 100 meters | 2 vehicles |
| Model Year | Body/Powertrain | g/100m | |
| 2015 | 2015 4dr Crew Cab 5.5ft bed 420-hp 6.2L V8 8-sp shiftable automatic 4WD w/low range | 4.78 | See all data |
| 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 4.78 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. |
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| 2015 | 2015 2dr Regular Cab 6.5ft bed 355-hp 5.3L V8 6-sp shiftable automatic 4WD w/low range | 31.12 | See all data |
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