2018 GMC Sierra 1500 MPG
Based on data from 193 vehicles, 17,773 fuel-ups and 5,021,707 miles of driving, the 2018 GMC Sierra 1500 gets a combined Avg MPG of 15.97 with a 0.05 MPG margin of error.
Below you can see a distribution of the fuel-ups with 245 outliers (1.36%) removed.
Following shows the average MPG of each of the 193 vehicles in the system.
2018 GMC Sierra 1500s For Sale Nearby
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2018 GMC Sierra Denali 4x4
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Jun 2018 • 267 Fuel-upsProperty of mpg01
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17.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
Added Oct 2023 • 72 Fuel-upsProperty of Harvey4335
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15.2 Avg MPG
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2018 GMC Sierra
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed Extended Cab Pickup
Added May 2018 • 459 Fuel-upsProperty of joenrox
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16.6 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Aug 2019 • 21 Fuel-upsProperty of jessbeavers
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28.1 Avg MPG
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Number 9
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
Added Oct 2018 • 224 Fuel-upsProperty of woodsmith
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17.5 Avg MPG
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Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Jun 2024 • 23 Fuel-upsProperty of Jathroo
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16.3 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
Added Mar 2018 • 244 Fuel-upsProperty of chilly0999
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16.4 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
Added Jan 2024 • 77 Fuel-upsProperty of Mr-GreenToCleanPools
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18.6 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added May 2024 • 79 Fuel-upsProperty of Zebby76
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17.0 Avg MPG
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Sierra
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Oct 2018 • 187 Fuel-upsProperty of ScottyR
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13.9 Avg MPG
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Black Betty
2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
Added Dec 2018 • 328 Fuel-upsProperty of tlawson85
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18.2 Avg MPG
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GMC Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Oct 2022 • 60 Fuel-upsProperty of ArtieBar64
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16.6 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added May 2018 • 217 Fuel-upsProperty of wmdahler
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17.3 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
Added Aug 2024 • 26 Fuel-upsProperty of o_dog2003
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17.2 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
Added Jun 2024 • 16 Fuel-upsProperty of richardcfo
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20.9 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Dec 2021 • 181 Fuel-upsProperty of riggity27
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14.9 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jan 2019 • 240 Fuel-upsProperty of cbinnie22
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15.5 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Oct 2019 • 359 Fuel-upsProperty of iNative
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15.9 Avg MPG
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Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Apr 2019 • 419 Fuel-upsProperty of CAHayes1109
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14.0 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
Added Aug 2022 • 63 Fuel-upsProperty of Miles_To_Go
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16.0 Avg MPG