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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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Nov 2018 • 75 Fuel-upsProperty of bennybeat
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15.9 Avg MPG
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GMC Sierra
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed
Added Jul 2018 • 114 Fuel-upsProperty of Aika_on_Fuelly
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15.6 Avg MPG
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18 Sierra
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Jul 2019 • 65 Fuel-upsProperty of tpalshadow
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17.0 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 4.3L V6 FLEX Automatic 6 Speed
Added Jun 2019 • 5 Fuel-upsProperty of overlook
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11.3 Avg MPG
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Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Jun 2018 • 133 Fuel-upsProperty of mwm203
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16.5 Avg MPG
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GMC Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Nov 2018 • 95 Fuel-upsProperty of Jeferon1
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11.6 Avg MPG
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SierraNutz
2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 8 Speed Crew Cab Pickup
Added Jul 2020 • 7 Fuel-upsProperty of Jcook96
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16.4 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Jun 2019 • 54 Fuel-upsProperty of mbrent77
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18.5 Avg MPG
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2018 GMC
2018 GMC Sierra 1500 SLE 4.3L V6 FLEX Automatic 6 Speed
Added Mar 2018 • 133 Fuel-upsProperty of MurphyD
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19.1 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Dec 2017 • 148 Fuel-upsProperty of Hacjr1949
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18.4 Avg MPG
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GMC Truck
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Extended Cab Pickup
Added Mar 2019 • 85 Fuel-upsProperty of JOlson
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14.4 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
Added Mar 2019 • 76 Fuel-upsProperty of Tommyboy1
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17.5 Avg MPG
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Noel
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
Added Jan 2019 • 34 Fuel-upsProperty of mkcollimsworth
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17.8 Avg MPG
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2018 GMC Sierra 1500 SLT
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Jul 2018 • 75 Fuel-upsProperty of blkcheech
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16.9 Avg MPG
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Little Red
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
Added Nov 2018 • 64 Fuel-upsProperty of llljrmd
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16.8 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 Dec 2018 • 122 Fuel-upsProperty of wdclark
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18.8 Avg MPG
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Sierra 1500
2018 GMC Sierra 1500 5.3L V8 GAS Automatic 6 Speed
Added Jul 2020 • 8 Fuel-upsProperty of riahkane
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15.2 Avg MPG
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2018 Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Nov 2017 • 90 Fuel-upsProperty of bae1161
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17.2 Avg MPG
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2018 Sierra 1500 SLT
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Mar 2018 • 175 Fuel-upsProperty of RickGMC
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16.7 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Sep 2019 • 5 Fuel-upsProperty of green02crew
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12.9 Avg MPG