2020 GMC Sierra 3500 HD MPG
Based on data from 42 vehicles, 2,249 fuel-ups and 803,343 miles of driving, the 2020 GMC Sierra 3500 HD gets a combined Avg MPG of 13.23 with a 0.16 MPG margin of error.
Below you can see a distribution of the fuel-ups with 50 outliers (2.17%) removed.
Following shows the average MPG of each of the 42 vehicles in the system.
2020 GMC Sierra 3500 HDs For Sale Nearby
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3500
2020 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Nov 2019 • 38 Fuel-upsProperty of rufus28
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18.2 Avg MPG
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The PEARL
2020 GMC Sierra 3500 HD Denali
Added Aug 2019 • 28 Fuel-upsProperty of bnoot
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15.0 Avg MPG