2021 GMC Sierra 1500 MPG
Based on data from 240 vehicles, 14,989 fuel-ups and 5,715,517 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.32 with a 0.09 MPG margin of error.
Below you can see a distribution of the fuel-ups with 78 outliers (0.52%) removed.
Following shows the average MPG of each of the 240 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 Oct 2023 • 28 Fuel-upsProperty of stevengross
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18.5 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Jan 2021 • 159 Fuel-upsProperty of yesubyllib
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23.2 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Mar 2021 • 217 Fuel-upsProperty of ryank880
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21.4 Avg MPG
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Elevation Diesel 2x4
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Jun 2021 • 109 Fuel-upsProperty of jcour
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29.7 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added May 2021 • 161 Fuel-upsProperty of jwarner77
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24.1 Avg MPG
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GMC Blackout
2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Aug 2021 • 113 Fuel-upsProperty of brockon
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20.6 Avg MPG
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GMC
2021 GMC Sierra 1500 SLT
Added Jan 2023 • 74 Fuel-upsProperty of builder604
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16.2 Avg MPG
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2021 GMC
2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Nov 2021 • 200 Fuel-upsProperty of ahartman
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16.5 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
Added Oct 2023 • 54 Fuel-upsProperty of gdmannjr
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16.0 Avg MPG
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My AT4
2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
Added Nov 2023 • 31 Fuel-upsProperty of subsailor
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14.6 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Dec 2020 • 111 Fuel-upsProperty of bh1703
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20.2 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Nov 2021 • 55 Fuel-upsProperty of steamroller69633
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15.5 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 • 21 Fuel-upsProperty of blrains706
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24.1 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
Added Feb 2021 • 91 Fuel-upsProperty of mastrodan3rd
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17.3 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
Added Sep 2023 • 20 Fuel-upsProperty of MysticMissile4
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16.4 Avg MPG
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Yodha
2021 GMC Sierra 1500 SLE 2.7L L4 GAS Automatic 8 Speed Extended Cab Pickup
Added Oct 2021 • 127 Fuel-upsProperty of YODHA
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22.5 Avg MPG
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GMC AT4
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Jan 2021 • 125 Fuel-upsProperty of GMCAT4
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22.5 Avg MPG
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Whipp'd
2021 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Jun 2021 • 93 Fuel-upsProperty of DCsells
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14.0 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Apr 2021 • 125 Fuel-upsProperty of tmac30075
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16.3 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2021 • 195 Fuel-upsProperty of Luddy
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26.3 Avg MPG