Based on data from 42 vehicles, 3,804 fuel-ups and 1,094,861 miles of driving, the 2017 GMC Terrain gets a combined Avg MPG of 21.52 with a 0.14 MPG margin of error.

Any Engine Type 2.4L L4 FLEX (11) 2.4L L4 GAS (18) 3.6L V6 FLEX (1) 3.6L V6 GAS (11) Any Body Style Sport Utility (15) Any Submodel SL (3) Denali (8) SLT (9) SLE (22)

Below you can see a distribution of the fuel-ups with 65 outliers (1.68%) removed.

Following shows the average MPG of each of the 42 vehicles in the system.

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• My Terrain

  2017 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added May 2022 • 30 Fuel-ups

  Property of myersa

• 23.8 Avg MPG

• Terrain

  2017 GMC Terrain SLE 3.6L V6 GAS Automatic 6 Speed Sport Utility
  Added Dec 2019 • 94 Fuel-ups

  Property of main1

• 18.3 Avg MPG

• 2017 - GMC - TERRAIN-SLT

  2017 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Feb 2018 • 585 Fuel-ups

  Property of mdcutting

• 25.9 Avg MPG

• My Terrain

  2017 GMC Terrain SLE 2.4L L4 FLEX Automatic 6 Speed
  Added Feb 2020 • 207 Fuel-ups

  Property of rocksolidex

• 24.2 Avg MPG

• My Terrain

  2017 GMC Terrain Denali 3.6L V6 GAS Automatic 6 Speed
  Added Aug 2017 • 192 Fuel-ups

  Property of w0bm

• 21.1 Avg MPG

• Terrain

  2017 GMC Terrain Denali 2.4L L4 FLEX Automatic 6 Speed
  Added Sep 2016 • 211 Fuel-ups

  Property of dlharris5

• 24.1 Avg MPG

• Lou's Terrian

  2017 GMC Terrain SLE 3.6L V6 GAS Automatic 6 Speed Sport Utility
  Added Jun 2019 • 61 Fuel-ups

  Property of luigi49221

• 22.1 Avg MPG

• Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jul 2017 • 180 Fuel-ups

  Property of ericvw

• 24.5 Avg MPG

• Red Nightfall

  2017 GMC Terrain SLE 3.6L V6 GAS Automatic 6 Speed Sport Utility
  Added Oct 2020 • 37 Fuel-ups

  Property of mxt161

• 21.9 Avg MPG

• My Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Jul 2021 • 26 Fuel-ups

  Property of AngryRtist

• 19.2 Avg MPG

• Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Oct 2017 • 208 Fuel-ups

  Property of brubble

• 22.7 Avg MPG

• WORK TERRAIN

  2017 GMC Terrain SL 2.4L L4 FLEX Automatic 6 Speed Sport Utility
  Added Jun 2018 • 342 Fuel-ups

  Property of shawdad

• 21.4 Avg MPG

• My Terrain

  2017 GMC Terrain SLE 3.6L V6 GAS Automatic 6 Speed
  Added Mar 2022 • 21 Fuel-ups

  Property of mommysewing

• 22.3 Avg MPG

• My Terrain

  2017 GMC Terrain Denali 3.6L V6 GAS Automatic 6 Speed
  Added Nov 2019 • 101 Fuel-ups

  Property of bhock

• 18.1 Avg MPG

• GMC Terrain

  2017 GMC Terrain SLT 3.6L V6 GAS Automatic 6 Speed
  Added Sep 2016 • 251 Fuel-ups

  Property of ilvikngfan

• 20.6 Avg MPG

• 2017 GMC Terrain

  2017 GMC Terrain SLE 3.6L V6 GAS Automatic 6 Speed
  Added Sep 2017 • 14 Fuel-ups

  Property of ccmaydew

• 23.4 Avg MPG

• My Terrain

  2017 GMC Terrain SLT 2.4L L4 FLEX Automatic 6 Speed
  Added Oct 2021 • 4 Fuel-ups

  Property of kimlatshaw

• 20.0 Avg MPG

• Ruby

  2017 GMC Terrain Denali 3.6L V6 FLEX Automatic 6 Speed
  Added Mar 2017 • 213 Fuel-ups

  Property of JesCo02

• 18.8 Avg MPG

• My Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Oct 2017 • 119 Fuel-ups

  Property of bandmomma

• 19.6 Avg MPG

• Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jan 2018 • 183 Fuel-ups

  Property of KVal7

• 21.1 Avg MPG

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