2018 GMC Sierra 3500 HD MPG
Based on data from 27 vehicles, 2,100 fuel-ups and 681,666 miles of driving, the 2018 GMC Sierra 3500 HD gets a combined Avg MPG of 12.11 with a 0.17 MPG margin of error.
Below you can see a distribution of the fuel-ups with 10 outliers (0.47%) removed.
Following shows the average MPG of each of the 27 vehicles in the system.
2018 GMC Sierra 3500 HDs For Sale Nearby
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GMC
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
Added Aug 2023 • 50 Fuel-upsProperty of hikyuuri
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14.7 Avg MPG
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Tow Pig
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Aug 2018 • 296 Fuel-upsProperty of Robicus
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13.2 Avg MPG
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Big Elmo
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
Added Jan 2018 • 156 Fuel-upsProperty of Geodude
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10.8 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Feb 2021 • 178 Fuel-upsProperty of codycourtney2
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13.6 Avg MPG
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GMC 3500
2018 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
Added Dec 2017 • 69 Fuel-upsProperty of Peterbuilt75
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10.9 Avg MPG
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Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Nov 2017 • 178 Fuel-upsProperty of jamesnkerr
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14.0 Avg MPG
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Great White L5P
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
Added Sep 2018 • 86 Fuel-upsProperty of 2manyliters
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13.9 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Mar 2024 • 3 Fuel-upsProperty of zachjohnson0726
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15.5 Avg MPG
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2018 GMC Sierra 3500HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
Added Aug 2019 • 166 Fuel-upsProperty of pputney
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11.8 Avg MPG
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Denali
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Jun 2018 • 125 Fuel-upsProperty of suasman
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14.1 Avg MPG
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Sierra
2018 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
Added Nov 2021 • 323 Fuel-upsProperty of artman1913
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11.5 Avg MPG
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DEF
2018 GMC Sierra 3500 HD SLT Automatic 6 Speed
Added Nov 2021 • 31 Fuel-upsProperty of artman1913
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525.2 Avg MPG
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Pick Up
2018 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
Added Nov 2022 • 4 Fuel-upsProperty of petestoy
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14.2 Avg MPG
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GMC Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Sep 2017 • 90 Fuel-upsProperty of amtrak8
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13.1 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Jul 2020 • 127 Fuel-upsProperty of tortuga99
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10.9 Avg MPG
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Sierra 3500 HD RV Hauler
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Mar 2020 • 109 Fuel-upsProperty of Derril
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11.9 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Sep 2018 • 155 Fuel-upsProperty of brizgislawrencej
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13.0 Avg MPG
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CB Denali
2018 GMC Sierra 3500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
Added Jul 2019 • 11 Fuel-upsProperty of KTBHDH
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9.2 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD 6.6L V8 DIESEL Automatic 6 Speed
Added Jul 2018 • 47 Fuel-upsProperty of skinnertonoutlaw
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8.7 Avg MPG
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Denali 3500 DWR
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
Added Jul 2018 • 13 Fuel-upsProperty of Ncrzrbk
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14.9 Avg MPG