2018 GMC Sierra 1500 MPG
Based on data from 193 vehicles, 17,923 fuel-ups and 5,066,367 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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Sierra Denali
2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Sep 2019 • 8 Fuel-upsProperty of PBU02
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23.5 Avg MPG
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Sierra 1500
2018 GMC Sierra 1500 SLE 4.3L V6 FLEX Automatic 6 Speed
Added Jan 2019 • 17 Fuel-upsProperty of Ratater
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15.5 Avg MPG
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Smokey
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
Added Oct 2018 • 37 Fuel-upsProperty of isobellacuan
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16.9 Avg MPG
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Thomas
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Nov 2018 • 20 Fuel-upsProperty of tomprzy
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18.1 Avg MPG
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Sierra
2018 GMC Sierra 1500 5.3L V8 GAS Automatic 6 Speed Extended Cab Pickup
Added Sep 2018 • 24 Fuel-upsProperty of pilule
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17.6 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
Added Jul 2018 • 20 Fuel-upsProperty of flopper666
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31.9 Avg MPG
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2018 Sierra 1500, 6.2, 3.23
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Jul 2018 • 33 Fuel-upsProperty of onecooljoe70
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14.2 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Apr 2019 • 8 Fuel-upsProperty of lcastrey
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16.9 Avg MPG
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My Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
Added Jul 2018 • 16 Fuel-upsProperty of changedman
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30.4 Avg MPG
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Stonewood
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Nov 2018 • 45 Fuel-upsProperty of Stonewood
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17.0 Avg MPG
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2018 Sierra 1500
2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 8 Speed
Added Feb 2019 • 20 Fuel-upsProperty of Mikecompton
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15.8 Avg MPG
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2018 GMC Sierra SLT
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Nov 2017 • 91 Fuel-upsProperty of FriskyLingo
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15.7 Avg MPG
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Denali
2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Sep 2018 • 19 Fuel-upsProperty of SpeedyD
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16.5 Avg MPG
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Black Sierra
2018 GMC Sierra 1500 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
Added Aug 2018 • 27 Fuel-upsProperty of GaGolfSup
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15.8 Avg MPG
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GMC Sierra
2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed Standard Cab Pickup
Added Apr 2021 • 53 Fuel-upsProperty of Twiese
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15.5 Avg MPG
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Bo’s Sierra SLT
2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
Added Mar 2018 • 66 Fuel-upsProperty of boewing1
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16.7 Avg MPG
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2018 GMC Sierra
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
Added Feb 2019 • 6 Fuel-upsProperty of 71sbeetle
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16.3 Avg MPG
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Betty
2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
Added Jan 2018 • 42 Fuel-upsProperty of and_steve
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15.4 Avg MPG
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My Sierra 1500
2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
Added Sep 2018 • 31 Fuel-upsProperty of sessionh
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15.0 Avg MPG
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2018 Sierra
2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
Added Mar 2018 • 33 Fuel-upsProperty of yogi-bear
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16.2 Avg MPG