2018 GMC Sierra 1500 MPG
Based on data from 180 vehicles, 13,927 fuel-ups and 3,948,496 miles of driving, the 2018 GMC Sierra 1500 gets a combined Avg MPG of 16.05 with a 0.06 MPG margin of error.
Below you can see a distribution of the fuel-ups with 210 outliers (1.49%) removed.
Following shows the average MPG of each of the 180 vehicles in the system.
2018 GMC Sierra 1500s For Sale Nearby
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Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jan 2019 • 349 Fuel-upsProperty of jered6323
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14.5 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Sep 2022 • 37 Fuel-upsProperty of jasonellington
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16.9 Avg MPG
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GMC Sierra 1500 2018
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Apr 2018 • 136 Fuel-upsProperty of JLF52
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18.8 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 5.3L V8 GAS Automatic 6 Speed
Added Oct 2022 • 130 Fuel-upsProperty of Mstc
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15.7 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jul 2022 • 23 Fuel-upsProperty of bertt34
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16.8 Avg MPG
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Truck
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added May 2018 • 136 Fuel-upsProperty of DrAwesome
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16.1 Avg MPG
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Glenn
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Nov 2020 • 187 Fuel-upsProperty of ghcrawford
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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 6 Speed
Added Oct 2019 • 201 Fuel-upsProperty of iNative
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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 May 2018 • 154 Fuel-upsProperty of wmdahler
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17.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Sep 2018 • 258 Fuel-upsProperty of Polar800
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14.4 Avg MPG
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Big Red Eskimo
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
Added Nov 2021 • 107 Fuel-upsProperty of rkfdwc1
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15.4 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
Added Dec 2018 • 216 Fuel-upsProperty of e37292
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16.9 Avg MPG
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GMC Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jun 2018 • 241 Fuel-upsProperty of Buckshot48
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17.6 Avg MPG
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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 • 182 Fuel-upsProperty of mpg01
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16.9 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 8 Speed
Added Nov 2018 • 158 Fuel-upsProperty of epedro40
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16.5 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 • 326 Fuel-upsProperty of CAHayes1109
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13.9 Avg MPG
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Truck
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Mar 2020 • 147 Fuel-upsProperty of jasonbrakhage
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14.2 Avg MPG
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Black Betty
2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
Added Dec 2018 • 199 Fuel-upsProperty of tlawson85
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18.0 Avg MPG
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Sierra
2018 GMC Sierra 1500 Denali Automatic 8 Speed Crew Cab Pickup
Added Jul 2021 • 53 Fuel-upsProperty of ch56vy
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14.0 Avg MPG
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Rooster
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Mar 2019 • 89 Fuel-upsProperty of x62605
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17.3 Avg MPG