2018 GMC Sierra 1500 MPG
Based on data from 186 vehicles, 16,344 fuel-ups and 4,616,610 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 236 outliers (1.42%) removed.
Following shows the average MPG of each of the 186 vehicles in the system.
2018 GMC Sierra 1500s For Sale Nearby
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2018 Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 8 Speed Crew Cab Pickup
Added Jan 2019 • 309 Fuel-upsProperty of civicsiracer06
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14.4 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Nov 2018 • 124 Fuel-upsProperty of emejay
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19.4 Avg MPG
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Company Truck
2018 GMC Sierra 1500 4.3L V6 FLEX Automatic 6 Speed Standard Cab Pickup
Added Feb 2019 • 115 Fuel-upsProperty of RhoadBlock
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15.5 Avg MPG
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My New Toy
2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
Added Jan 2019 • 82 Fuel-upsProperty of widebody
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16.9 Avg MPG
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2018 GMC Sierra
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
Added Mar 2018 • 180 Fuel-upsProperty of Existant69
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13.9 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
Added May 2020 • 29 Fuel-upsProperty of nkeller32
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18.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 4.3L V6 FLEX Automatic 6 Speed
Added Jan 2020 • 101 Fuel-upsProperty of GregEscobar
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19.1 Avg MPG
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18 GMC
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Oct 2021 • 50 Fuel-upsProperty of oldguy123
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18.9 Avg MPG
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Sierra All Terain
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jan 2020 • 88 Fuel-upsProperty of 76cj
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19.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Dec 2020 • 73 Fuel-upsProperty of ianspecs
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13.6 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jan 2021 • 21 Fuel-upsProperty of maassen5995
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19.4 Avg MPG
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2018 Sierra Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Feb 2019 • 75 Fuel-upsProperty of gfervin
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14.8 Avg MPG
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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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5.3L Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
Added Jul 2021 • 16 Fuel-upsProperty of Corelax
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15.5 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