2020 GMC Sierra 1500 MPG
Based on data from 194 vehicles, 15,742 fuel-ups and 5,194,125 miles of driving, the 2020 GMC Sierra 1500 gets a combined Avg MPG of 18.21 with a 0.08 MPG margin of error.
Below you can see a distribution of the fuel-ups with 350 outliers (2.17%) removed.
Following shows the average MPG of each of the 194 vehicles in the system.
2020 GMC Sierra 1500s For Sale Nearby
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My Sierra 1500
2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Oct 2021 • 234 Fuel-upsProperty of AnglerAT
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24.9 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
Added Apr 2020 • 305 Fuel-upsProperty of GRCubsfan
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17.0 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLE 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2020 • 131 Fuel-upsProperty of elcount
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24.6 Avg MPG
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The Duramax
2020 GMC Sierra 1500 SLE 3.0L L6 DIESEL Automatic 10 Speed
Added Jan 2021 • 139 Fuel-upsProperty of Mijo123
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20.8 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
Added Oct 2020 • 176 Fuel-upsProperty of mcginnmf16
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15.2 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2020 • 209 Fuel-upsProperty of JettaFuelMileage
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15.3 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
Added Jun 2022 • 139 Fuel-upsProperty of nicktcr
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19.3 Avg MPG
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Sierra 1500
2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
Added Feb 2021 • 194 Fuel-upsProperty of bmrohrer
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15.1 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
Added Dec 2021 • 123 Fuel-upsProperty of rudog805
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18.1 Avg MPG
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Sierra Denali 1500
2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 8 Speed
Added Jul 2023 • 21 Fuel-upsProperty of kcazatk_1
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24.8 Avg MPG
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Crimson Ride
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added May 2020 • 168 Fuel-upsProperty of texbama
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21.1 Avg MPG
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Babymax
2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Sep 2021 • 57 Fuel-upsProperty of M8trix1469
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20.6 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Sep 2024 • 13 Fuel-upsProperty of coreywgrant
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23.9 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
Added Jan 2020 • 107 Fuel-upsProperty of TigerDeAnn
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18.1 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
Added Dec 2023 • 65 Fuel-upsProperty of sslack1970
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18.4 Avg MPG
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My Sierra 1500
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Aug 2023 • 100 Fuel-upsProperty of eizan70
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15.9 Avg MPG
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Sierra 1500
2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
Added Oct 2020 • 226 Fuel-upsProperty of pinkdream
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16.3 Avg MPG
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GMC Sierra 1500 AT4
2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
Added Aug 2022 • 182 Fuel-upsProperty of AT42020
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16.8 Avg MPG
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Sierra 1500 SLT
2020 GMC Sierra 1500 SLT
Added Jan 2020 • 431 Fuel-upsProperty of bdenman
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19.1 Avg MPG
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2020 GMC Sierra
2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Sep 2020 • 174 Fuel-upsProperty of jndelisl
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17.3 Avg MPG