2021 GMC Sierra 1500 MPG
Based on data from 247 vehicles, 16,978 fuel-ups and 6,450,372 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.28 with a 0.09 MPG margin of error.
Below you can see a distribution of the fuel-ups with 91 outliers (0.53%) removed.
Following shows the average MPG of each of the 247 vehicles in the system.
2021 GMC Sierra 1500s For Sale Nearby
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SLT Babymax
2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Mar 2021 • 11 Fuel-upsProperty of Fordt
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23.4 Avg MPG
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YanivsAT4
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Mar 2021 • 12 Fuel-upsProperty of YanivsAT4
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21.8 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Dec 2020 • 9 Fuel-upsProperty of halflife1820
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21.5 Avg MPG
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21 Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Nov 2020 • 8 Fuel-upsProperty of meema4780
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20.8 Avg MPG
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GMC
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Cab & Chassis - Crew Cab
Added Jan 2021 • 3 Fuel-upsProperty of MrGold
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27.2 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Feb 2021 • 4 Fuel-upsProperty of Jrschrum
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32.0 Avg MPG
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Hank
2021 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Nov 2020 • 3 Fuel-upsProperty of knowah
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16.9 Avg MPG