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2021 GMC Terrain MPG

Based on data from 12 vehicles, 1,029 fuel-ups and 257,018 miles of driving, the 2021 GMC Terrain gets a combined Avg MPG of 26.10 with a 0.24 MPG margin of error.

Below you can see a distribution of the fuel-ups with 35 outliers (3.29%) removed.

Following shows the average MPG of each of the 12 vehicles in the system.

  • My Terrain

    2021 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
    Added Apr 2024 • 5 Fuel-ups

    Property of EvanHertzer

  • 25.7 Avg MPG
  • Terrain

    2021 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed
    Added Jan 2023 • 177 Fuel-ups

    Property of 2xGrey

  • 27.6 Avg MPG
  • My Terrain

    2021 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed
    Added Nov 2021 • 175 Fuel-ups

    Property of mcewen514

  • 25.9 Avg MPG
  • Terrain

    2021 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed Sport Utility
    Added May 2021 • 330 Fuel-ups

    Property of Que850

  • 24.3 Avg MPG
  • TERRAIN

    2021 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed Sport Utility
    Added Jul 2021 • 62 Fuel-ups

    Property of Gotham29

  • 23.2 Avg MPG
  • GMC Terrain

    2021 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
    Added Apr 2021 • 5 Fuel-ups

    Property of Jkasopsky

  • 131.3 Avg MPG
  • Satin Steel

    2021 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed Sport Utility
    Added Feb 2021 • 36 Fuel-ups

    Property of rxmonchamp

  • 25.5 Avg MPG
  • 2021 GMC Terrain

    2021 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed Sport Utility
    Added Feb 2023 • 189 Fuel-ups

    Property of terrymc1

  • 27.9 Avg MPG
  • AllTerrainVehicle

    2021 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed Sport Utility
    Added Apr 2021 • 85 Fuel-ups

    Property of SilverSLE

  • 32.3 Avg MPG
  • Jo Ann's Upgrade

    2021 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed Sport Utility
    Added Jun 2021 • 39 Fuel-ups

    Property of mjshultz

  • 24.0 Avg MPG
  • GMC Terrain

    2021 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed Sport Utility
    Added May 2022 • 6 Fuel-ups

    Property of dcollin9

  • 33.8 Avg MPG
  • Dizzy

    2021 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed Sport Utility
    Added Jul 2021 • 7 Fuel-ups

    Property of SpaceEngineer

  • 31.0 Avg MPG

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