2020 GMC Sierra 3500 HD MPG

Based on data from 42 vehicles, 2,306 fuel-ups and 824,016 miles of driving, the 2020 GMC Sierra 3500 HD gets a combined Avg MPG of 13.25 with a 0.16 MPG margin of error.

Below you can see a distribution of the fuel-ups with 53 outliers (2.25%) removed.

Following shows the average MPG of each of the 42 vehicles in the system.

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• 3500

  2020 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Nov 2019 • 38 Fuel-ups

  Property of rufus28

• 18.2 Avg MPG

• The PEARL

  2020 GMC Sierra 3500 HD Denali
  Added Aug 2019 • 28 Fuel-ups

  Property of bnoot

• 15.0 Avg MPG

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