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2021 GMC Sierra MPG

Based on data from 1 vehicles, 12 fuel-ups and 4,502 miles of driving, the 2021 GMC Sierra gets a combined Avg MPG of 18.97 with a 0.96 MPG margin of error.

Below you can see a distribution of the fuel-ups with 2 outliers (14.29%) removed.

2021 GMC Sierras For Sale Nearby

  • Carbon Pro

    2021 GMC Sierra AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Jul 2024 • 30 Fuel-ups

    Property of joedogg

  • 18.7 Avg MPG

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