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2021 GMC Sierra 2500 HD MPG

Based on data from 1 vehicles, 0 fuel-ups and N/A miles of driving, the 2021 GMC Sierra 2500 HD gets a combined Avg MPG of 0.00 with a 0.00 MPG margin of error.

Below you can see a distribution of the fuel-ups with 3 outliers (100.00%) removed.

  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD 6.6L V8 GAS Automatic 6 Speed
    Added Nov 2020 • 7 Fuel-ups

    Property of dsmayer

  • 7.5 Avg MPG

Recent Activity

from other GMC Sierra 2500 HD vehicles (View All)


Use ethanol-free gas

Wonder why your fuel economy drops during the winter? Ethano... ...

by XaXa

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