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2018 GMC Sierra MPG

Based on data from 1 vehicles, 15 fuel-ups and 5,765 miles of driving, the 2018 GMC Sierra gets a combined Avg MPG of 18.48 with a 0.34 MPG margin of error.

Below you can see a distribution of the fuel-ups with 1 outliers (6.25%) removed.

2018 GMC Sierras For Sale Nearby

  • My Sierra

    2018 GMC Sierra Denali 6.2L V8 GAS Automatic 8 Speed
    Added Mar 2019 • 17 Fuel-ups

    Property of snoopkeith

  • 18.6 Avg MPG

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from other GMC Sierra vehicles (View All)


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I've noticed that I get better gas mileage when I fuel up wi... ...

by modglila

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