2020 GMC Sierra 1500 MPG
Based on data from 192 vehicles, 15,640 fuel-ups and 5,155,451 miles of driving, the 2020 GMC Sierra 1500 gets a combined Avg MPG of 18.22 with a 0.08 MPG margin of error.
Below you can see a distribution of the fuel-ups with 351 outliers (2.19%) removed.
Following shows the average MPG of each of the 192 vehicles in the system.
2020 GMC Sierra 1500s For Sale Nearby
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2020 Sierra Denali
2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Apr 2023 • 63 Fuel-upsProperty of gksills
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19.4 Avg MPG
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Sierra 1500
2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Jun 2020 • 55 Fuel-upsProperty of Heatdish
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24.2 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 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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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 3.0L L6 DIESEL Automatic 10 Speed
Added Apr 2022 • 58 Fuel-upsProperty of gcoil
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23.3 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Aug 2023 • 7 Fuel-upsProperty of Doc31
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19.4 Avg MPG
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Sierra 1500 AT4
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Apr 2020 • 96 Fuel-upsProperty of jjuppyh
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22.5 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Mar 2022 • 77 Fuel-upsProperty of Mazerk
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24.6 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Oct 2020 • 143 Fuel-upsProperty of SRolfe
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25.4 Avg MPG
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2020 GMC Sierra
2020 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Aug 2020 • 120 Fuel-upsProperty of juneau76
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24.7 Avg MPG
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Sierra AT4
2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
Added Feb 2023 • 69 Fuel-upsProperty of kdavismt
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15.2 Avg MPG
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Sierra
2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Feb 2020 • 249 Fuel-upsProperty of Bowtie76
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14.4 Avg MPG
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Sierra
2020 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Feb 2024 • 57 Fuel-upsProperty of nick8924
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15.6 Avg MPG
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2020 Denali
2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
Added Sep 2023 • 22 Fuel-upsProperty of dirtymoe77
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15.1 Avg MPG
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Red Rover
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added May 2020 • 163 Fuel-upsProperty of wondergeek
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21.6 Avg MPG
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2020 GMC AT4
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Mar 2023 • 31 Fuel-upsProperty of Risser
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24.4 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added May 2020 • 31 Fuel-upsProperty of protouring
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22.1 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
Added Oct 2023 • 11 Fuel-upsProperty of FarmboyFresh100
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26.7 Avg MPG