2020 GMC Sierra 1500 MPG
Based on data from 191 vehicles, 15,021 fuel-ups and 4,952,840 miles of driving, the 2020 GMC Sierra 1500 gets a combined Avg MPG of 18.23 with a 0.08 MPG margin of error.
Below you can see a distribution of the fuel-ups with 342 outliers (2.23%) removed.
Following shows the average MPG of each of the 191 vehicles in the system.
2020 GMC Sierra 1500s For Sale Nearby
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GMC Sierra 1500 AT4
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2020 • 175 Fuel-upsProperty of Knoname
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20.0 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Aug 2020 • 133 Fuel-upsProperty of jessemfa
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23.0 Avg MPG
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Pretty Ass Red Sierra 1500
2020 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Jul 2020 • 95 Fuel-upsProperty of BrianK
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24.7 Avg MPG
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Bandit
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2023 • 73 Fuel-upsProperty of bowden
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24.2 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2020 • 199 Fuel-upsProperty of JettaFuelMileage
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15.4 Avg MPG
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GMC Sierra
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Mar 2023 • 92 Fuel-upsProperty of robertt656
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18.1 Avg MPG
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AT4
2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Sep 2022 • 121 Fuel-upsProperty of srlew
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15.1 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Oct 2020 • 164 Fuel-upsProperty of surfintx2004
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20.0 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Jun 2021 • 84 Fuel-upsProperty of weedtrucker
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25.3 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 2.7L L4 GAS Automatic 6 Speed
Added Apr 2023 • 34 Fuel-upsProperty of Stenwood
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19.6 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added May 2023 • 30 Fuel-upsProperty of theautopilot
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16.9 Avg MPG
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GMC Sierra 1500
2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
Added Jul 2024 • 208 Fuel-upsProperty of kevinharper9
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17.7 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
Added Jan 2024 • 14 Fuel-upsProperty of Jbonebrake
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23.5 Avg MPG
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Diesel Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Oct 2020 • 80 Fuel-upsProperty of Along411
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23.4 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
Added Oct 2020 • 223 Fuel-upsProperty of Kurrirra
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15.6 Avg MPG
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2020 GMC Sierra 1500 Denali
2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Jun 2020 • 90 Fuel-upsProperty of sk83
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22.5 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
Added Aug 2020 • 126 Fuel-upsProperty of crggmc
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15.2 Avg MPG
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Moose
2020 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Oct 2020 • 63 Fuel-upsProperty of soundwise
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20.4 Avg MPG
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Duramax
2020 GMC Sierra 1500 SLE 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Apr 2020 • 161 Fuel-upsProperty of mattb5150
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19.5 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
Added May 2024 • 7 Fuel-upsProperty of kim98642
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14.8 Avg MPG