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2025 GMC Sierra 2500 HD MPG

Based on data from 2 vehicles, 10 fuel-ups and 2,842 miles of driving, the 2025 GMC Sierra 2500 HD gets a combined Avg MPG of 14.64 with a 0.62 MPG margin of error.

Below you can see a distribution of the fuel-ups with 2 outliers (16.67%) removed.

Created with Highcharts 4.0.4Avg MPGNumber of Fuel-ups131415160123456

Following shows the average MPG of each of the 2 vehicles in the system.

Created with Highcharts 4.0.4Avg MPGNumber of Vehicles1516012

2025 GMC Sierra 2500 HDs For Sale Nearby

  • GMC 2500 HD AT4

    2025 GMC Sierra 2500 HD AT4 Automatic 10 Speed
    Added Dec 2024 • 12 Fuel-ups

    Property of machzender

  • 14.5 Avg MPG
  • AT4

    2025 GMC Sierra 2500 HD SLE Automatic 10 Speed Crew Cab Pickup
    Added Jan 2025 • 4 Fuel-ups

    Property of Corey700

  • 15.4 Avg MPG

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