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.
Following shows the average MPG of each of the 2 vehicles in the system.
2025 GMC Sierra 2500 HDs For Sale Nearby
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GMC 2500 HD AT4
2025 GMC Sierra 2500 HD AT4 Automatic 10 Speed
Added Dec 2024 • 12 Fuel-upsProperty of machzender
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14.5 Avg MPG
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AT4
2025 GMC Sierra 2500 HD SLE Automatic 10 Speed Crew Cab Pickup
Added Jan 2025 • 4 Fuel-upsProperty of Corey700
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15.4 Avg MPG