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2015 GMC Sierra MPG

Based on data from 21 vehicles, 2,940 fuel-ups and 842,663 miles of driving, the 2015 GMC Sierra gets a combined Avg MPG of 16.57 with a 0.12 MPG margin of error.

Below you can see a distribution of the fuel-ups with 233 outliers (7.34%) removed.

Following shows the average MPG of each of the 21 vehicles in the system.

2015 GMC Sierras For Sale Nearby

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  • Sierra

    2015 GMC Sierra All Terrain 5.3L V8 GAS Automatic 6 Speed
    Added Mar 2017 • 62 Fuel-ups

    Property of elisepol

  • 17.6 Avg MPG
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from other GMC Sierra vehicles (View All)

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Think About Other People's MPG Too!

Accelerating too slowly through a stop light or stopping too... ...

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