2021 GMC Sierra 1500 MPG
Based on data from 220 vehicles, 12,765 fuel-ups and 4,841,994 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.35 with a 0.10 MPG margin of error.
Below you can see a distribution of the fuel-ups with 64 outliers (0.50%) removed.
Following shows the average MPG of each of the 220 vehicles in the system.
2021 GMC Sierra 1500s For Sale Nearby
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My Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Jun 2021 • 96 Fuel-upsProperty of sooner2016
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25.3 Avg MPG
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My Sierra 1500 AT4
2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
Added Jan 2021 • 105 Fuel-upsProperty of sfwalters
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18.8 Avg MPG
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AT4
2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Sep 2023 • 18 Fuel-upsProperty of rockopolster
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18.1 Avg MPG
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2021 Elevation
2021 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Jun 2021 • 115 Fuel-upsProperty of craigw76
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18.7 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 10 Speed
Added Oct 2023 • 6 Fuel-upsProperty of jiro_franco
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14.3 Avg MPG
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GMC
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Extended Cab Pickup
Added Jan 2022 • 40 Fuel-upsProperty of johnny91750
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26.1 Avg MPG
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Sierra Duramax
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Oct 2022 • 25 Fuel-upsProperty of BBJ1
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21.9 Avg MPG
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2021 GMC Sierra SLT 1500 4WD
2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Aug 2023 • 6 Fuel-upsProperty of blrains706
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24.6 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Mar 2021 • 184 Fuel-upsProperty of ryank880
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21.4 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
Added Jan 2021 • 77 Fuel-upsProperty of wholyon
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17.7 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
Added Dec 2020 • 232 Fuel-upsProperty of SilverSully83
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24.3 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2021 • 158 Fuel-upsProperty of AT4-GLI
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23.4 Avg MPG
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2021 Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Sep 2022 • 37 Fuel-upsProperty of milcher
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21.7 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2021 • 154 Fuel-upsProperty of Luddy
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26.0 Avg MPG
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21 GMC Sierra AT4
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 8 Speed
Added Oct 2021 • 63 Fuel-upsProperty of bhess19
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22.3 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Jun 2021 • 130 Fuel-upsProperty of tgutwein
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25.2 Avg MPG
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GMC Blackout
2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Aug 2021 • 98 Fuel-upsProperty of brockon
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20.7 Avg MPG
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GMC Denali
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2022 • 32 Fuel-upsProperty of gtanner
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27.2 Avg MPG
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AT4 Gray Dragon
2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 8 Speed
Added Aug 2021 • 135 Fuel-upsProperty of tank91w
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15.7 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
Added Aug 2021 • 94 Fuel-upsProperty of jmartinezflyer
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16.0 Avg MPG