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2020 GMC Sierra 2500 MPG

Based on data from 4 vehicles, 607 fuel-ups and 261,413 miles of driving, the 2020 GMC Sierra 2500 gets a combined Avg MPG of 16.72 with a 0.23 MPG margin of error.

Below you can see a distribution of the fuel-ups with 2 outliers (0.33%) removed.

Following shows the average MPG of each of the 4 vehicles in the system.

2020 GMC Sierra 2500s For Sale Nearby

  • ‘20 Sierra 1500

    2020 GMC Sierra 2500
    Added Jan 2020 • 278 Fuel-ups

    Property of Zantine

  • 19.6 Avg MPG
  • La mamalona

    2020 GMC Sierra 2500 HD
    Added Jan 2020 • 191 Fuel-ups

    Property of jaime07garcia

  • 15.0 Avg MPG
  • My Sierra 2500

    2020 GMC Sierra 2500 HD
    Added Jan 2020 • 165 Fuel-ups

    Property of jbose

  • 17.3 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Automatic 6 Speed
    Added Nov 2019 • 63 Fuel-ups

    Property of Danm1228

  • 14.9 Avg MPG

Recent Activity

from other GMC Sierra 2500 vehicles (View All)

Tips

How fast should you drive for fuel economy?

The tips I've read so far fail to account for the vehicle's ... ...

by Runaway1956

Read more tips