2018 GMC Sierra 1500 MPG
Based on data from 193 vehicles, 17,945 fuel-ups and 5,072,208 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 246 outliers (1.35%) 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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Bluejay
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
Added Jul 2021 • 107 Fuel-upsProperty of Bigtrucker53
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18.5 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed
Added Feb 2022 • 101 Fuel-upsProperty of Ridley13
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14.5 Avg MPG
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2018 GMC Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Mar 2018 • 84 Fuel-upsProperty of geeklife
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17.7 Avg MPG
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2018 Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
Added Feb 2019 • 121 Fuel-upsProperty of trentm
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15.5 Avg MPG
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2018 Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Nov 2018 • 75 Fuel-upsProperty of Matt1552
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20.1 Avg MPG
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2018 Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jul 2018 • 148 Fuel-upsProperty of mkirbitz
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16.7 Avg MPG
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Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
Added Oct 2019 • 215 Fuel-upsProperty of hubbd33
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14.8 Avg MPG
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2018 GMC Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Jun 2019 • 113 Fuel-upsProperty of Daaavid
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15.6 Avg MPG
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Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Jul 2018 • 82 Fuel-upsProperty of ricanizedkilla
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13.6 Avg MPG
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GMC
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Dec 2018 • 309 Fuel-upsProperty of Tigers20
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18.1 Avg MPG
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GMC Sierra 1500 TOWING
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Aug 2018 • 8 Fuel-upsProperty of Dirtpig
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9.5 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
Added Oct 2020 • 5 Fuel-upsProperty of JTinFL
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17.4 Avg MPG
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Blue beauty
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Sep 2018 • 130 Fuel-upsProperty of grandmercls
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15.9 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
Added Dec 2018 • 85 Fuel-upsProperty of NGreen08
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16.2 Avg MPG
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2018 GMC Sierra
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Dec 2017 • 43 Fuel-upsProperty of gulas47
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16.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
Added Apr 2018 • 80 Fuel-upsProperty of lancecai77
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17.3 Avg MPG
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GMC
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Mar 2019 • 73 Fuel-upsProperty of Bingman
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16.3 Avg MPG
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GMC Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Aug 2019 • 25 Fuel-upsProperty of scatterscott
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14.8 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Jun 2019 • 87 Fuel-upsProperty of kbcsac
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16.3 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Mar 2018 • 136 Fuel-upsProperty of thompson818
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14.0 Avg MPG