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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2018 Max
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Dec 2017 • 93 Fuel-upsProperty of broit
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12.7 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
Added Mar 2019 • 4 Fuel-upsProperty of mps446
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14.3 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
Added Apr 2018 • 14 Fuel-upsProperty of dogspike
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14.2 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD 6.6L V8 DIESEL Automatic 6 Speed
Added Apr 2020 • 6 Fuel-upsProperty of dboyznme
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14.8 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Nov 2017 • 31 Fuel-upsProperty of mcumbie
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10.9 Avg MPG
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2018 Sierra Denali HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
Added Apr 2018 • 5 Fuel-upsProperty of TrevorR_EcoDiesel
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11.2 Avg MPG
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My Sierra 3500 HD
2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Dec 2017 • 3 Fuel-upsProperty of spudman00
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17.0 Avg MPG
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