2020 GMC Sierra 1500 MPG
Based on data from 153 vehicles, 7,705 fuel-ups and 2,628,139 miles of driving, the 2020 GMC Sierra 1500 gets a combined Avg MPG of 18.66 with a 0.12 MPG margin of error.
Below you can see a distribution of the fuel-ups with 59 outliers (0.76%) removed.
Following shows the average MPG of each of the 153 vehicles in the system.
2020 GMC Sierra 1500s For Sale Nearby
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Crimson Ride
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added May 2020 • 75 Fuel-upsProperty of texbama
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21.5 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Oct 2021 • 99 Fuel-upsProperty of AnglerAT
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25.2 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
Added Sep 2020 • 32 Fuel-upsProperty of Davecaps
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19.2 Avg MPG
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Big Gray
2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 8 Speed
Added Oct 2020 • 61 Fuel-upsProperty of wirowek
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23.2 Avg MPG
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2020 Sierra 1500 AT4
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Sep 2020 • 53 Fuel-upsProperty of jhhaney97
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23.2 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 • 89 Fuel-upsProperty of mattb5150
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20.5 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
Added Sep 2020 • 96 Fuel-upsProperty of mbnereim
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16.5 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Aug 2020 • 67 Fuel-upsProperty of jessemfa
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22.4 Avg MPG
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Sierra 1500 AT4
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Apr 2020 • 55 Fuel-upsProperty of jjuppyh
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23.1 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 10 Speed
Added Apr 2020 • 60 Fuel-upsProperty of Qbert
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16.4 Avg MPG
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GMC Sierra
2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Sep 2020 • 63 Fuel-upsProperty of Bensontbjj1
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17.5 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
Added Sep 2020 • 153 Fuel-upsProperty of ImpRoma
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18.4 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
Added Aug 2020 • 63 Fuel-upsProperty of crggmc
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14.9 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 • 120 Fuel-upsProperty of Bowtie76
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14.8 Avg MPG
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AT4
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Dec 2020 • 35 Fuel-upsProperty of rmsevo
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21.5 Avg MPG
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Maxine
2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Aug 2020 • 92 Fuel-upsProperty of ItsMine
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25.4 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Mar 2022 • 11 Fuel-upsProperty of JMcCabe
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18.6 Avg MPG
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The Duramax
2020 GMC Sierra 1500 SLE 3.0L L6 DIESEL Automatic 10 Speed
Added Jan 2021 • 65 Fuel-upsProperty of Mijo123
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21.9 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 • 58 Fuel-upsProperty of sk83
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22.9 Avg MPG
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2020 Sierra - Towing
2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Aug 2020 • 24 Fuel-upsProperty of Rexpelagi
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19.7 Avg MPG