2018 GMC Sierra 1500 MPG
Based on data from 186 vehicles, 16,451 fuel-ups and 4,645,636 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 239 outliers (1.43%) 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 GMC Sierra Denali 4x4
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Jun 2018 • 243 Fuel-upsProperty of mpg01
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17.2 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Feb 2024 • 12 Fuel-upsProperty of BowManGuardian
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16.2 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 • 170 Fuel-upsProperty of JLF52
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18.7 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 • 171 Fuel-upsProperty of ScottyR
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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 • 51 Fuel-upsProperty of Miles_To_Go
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15.9 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Jan 2018 • 143 Fuel-upsProperty of nmason42
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15.0 Avg MPG
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GMC
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 8 Speed Crew Cab Pickup
Added Jul 2022 • 78 Fuel-upsProperty of jscott2126
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15.6 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 • 124 Fuel-upsProperty of x62605
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17.5 Avg MPG
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Number 9
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
Added Oct 2018 • 205 Fuel-upsProperty of woodsmith
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17.6 Avg MPG
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2018 Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 8 Speed
Added Feb 2018 • 396 Fuel-upsProperty of elliston61
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20.3 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
Added Oct 2023 • 37 Fuel-upsProperty of Harvey4335
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15.0 Avg MPG
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Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added May 2021 • 110 Fuel-upsProperty of gabeyoung
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11.8 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
Added Jun 2020 • 3 Fuel-upsProperty of mjb2288
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16.0 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jul 2022 • 66 Fuel-upsProperty of bertt34
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15.7 Avg MPG
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Sierra
2018 GMC Sierra 1500 Denali Automatic 8 Speed Crew Cab Pickup
Added Jul 2021 • 91 Fuel-upsProperty of ch56vy
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13.6 Avg MPG
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Jimmy
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Jan 2018 • 204 Fuel-upsProperty of cowpen
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19.0 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
Added Mar 2018 • 211 Fuel-upsProperty of chilly0999
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16.0 Avg MPG
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2018 GMC Sierra
2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
Added Oct 2018 • 184 Fuel-upsProperty of bgrinder90
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14.0 Avg MPG
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My Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Apr 2022 • 43 Fuel-upsProperty of cheapguy99
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12.4 Avg MPG
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Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Jan 2020 • 123 Fuel-upsProperty of Teutonics
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17.4 Avg MPG