2018 GMC Sierra 1500 MPG
Based on data from 186 vehicles, 16,350 fuel-ups and 4,618,533 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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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Oct 2019 • 321 Fuel-upsProperty of iNative
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15.7 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
Added Jan 2024 • 20 Fuel-upsProperty of Mr-GreenToCleanPools
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19.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Feb 2024 • 10 Fuel-upsProperty of BowManGuardian
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16.3 Avg MPG
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Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jan 2019 • 423 Fuel-upsProperty of jered6323
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14.5 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jan 2019 • 218 Fuel-upsProperty of cbinnie22
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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
Added Jan 2020 • 122 Fuel-upsProperty of Teutonics
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17.4 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 • 262 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 2023 • 33 Fuel-upsProperty of Harvey4335
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14.9 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 • 123 Fuel-upsProperty of x62605
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17.5 Avg MPG
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My Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Apr 2022 • 41 Fuel-upsProperty of cheapguy99
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12.4 Avg MPG
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2018 Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Nov 2018 • 253 Fuel-upsProperty of gerickson24
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13.9 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Dec 2021 • 150 Fuel-upsProperty of riggity27
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15.0 Avg MPG
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Jolene
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Jul 2020 • 161 Fuel-upsProperty of eddiemoney
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17.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 8 Speed
Added Nov 2018 • 217 Fuel-upsProperty of epedro40
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16.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
Added Jan 2020 • 127 Fuel-upsProperty of retiredcb
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18.9 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
Added Apr 2018 • 206 Fuel-upsProperty of rleitht
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15.0 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Jan 2018 • 142 Fuel-upsProperty of nmason42
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15.0 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
Added Feb 2019 • 189 Fuel-upsProperty of turbonix
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17.5 Avg MPG
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Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Oct 2023 • 14 Fuel-upsProperty of Jhs4
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13.8 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 • 202 Fuel-upsProperty of cowpen
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19.1 Avg MPG