Based on data from 39 vehicles, 2,888 fuel-ups and 810,418 miles of driving, the 2017 GMC Terrain gets a combined Avg MPG of 21.50 with a 0.15 MPG margin of error.

Any Engine Type 2.4L L4 FLEX (11) 2.4L L4 GAS (17) 3.6L V6 FLEX (1) 3.6L V6 GAS (9) Any Body Style Sport Utility (16) Any Submodel SL (3) SLT (8) Denali (8) SLE (20)

Below you can see a distribution of the fuel-ups with 99 outliers (3.31%) removed.

Following shows the average MPG of each of the 39 vehicles in the system.

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• My Terrain

  2017 GMC Terrain SLE 2.4L L4 FLEX Automatic 6 Speed
  Added Feb 2020 • 59 Fuel-ups

  Property of rocksolidex

• 26.0 Avg MPG

• 2017 - GMC - TERRAIN-SLT

  2017 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Feb 2018 • 394 Fuel-ups

  Property of mdcutting

• 25.6 Avg MPG

• White Jimmy

  2017 GMC Terrain Denali 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jul 2020 • 23 Fuel-ups

  Property of dovey413gmailcom

• 25.9 Avg MPG

• Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Oct 2017 • 150 Fuel-ups

  Property of brubble

• 22.8 Avg MPG

• GMC Terrain

  2017 GMC Terrain SLT 3.6L V6 GAS Automatic 6 Speed
  Added Sep 2016 • 197 Fuel-ups

  Property of ilvikngfan

• 20.7 Avg MPG

• Ruby

  2017 GMC Terrain Denali 3.6L V6 FLEX Automatic 6 Speed
  Added Mar 2017 • 159 Fuel-ups

  Property of JesCo02

• 19.1 Avg MPG

• Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jan 2018 • 175 Fuel-ups

  Property of KVal7

• 20.8 Avg MPG

• Terrain

  2017 GMC Terrain SLE 3.6L V6 GAS Automatic 6 Speed Sport Utility
  Added Dec 2019 • 28 Fuel-ups

  Property of main1

• 17.8 Avg MPG

• My Terrain

  2017 GMC Terrain Denali 3.6L V6 GAS Automatic 6 Speed
  Added Aug 2017 • 132 Fuel-ups

  Property of w0bm

• 21.0 Avg MPG

• My Terrain

  2017 GMC Terrain Denali 3.6L V6 GAS Automatic 6 Speed
  Added Nov 2019 • 52 Fuel-ups

  Property of bhock

• 18.7 Avg MPG

• My Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Oct 2017 • 111 Fuel-ups

  Property of bandmomma

• 19.9 Avg MPG

• Terrain

  2017 GMC Terrain Denali 2.4L L4 FLEX Automatic 6 Speed
  Added Sep 2016 • 154 Fuel-ups

  Property of dlharris5

• 24.0 Avg MPG

• Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jul 2017 • 125 Fuel-ups

  Property of ericvw

• 24.6 Avg MPG

• WORK TERRAIN

  2017 GMC Terrain SL 2.4L L4 FLEX Automatic 6 Speed Sport Utility
  Added Jun 2018 • 194 Fuel-ups

  Property of shawdad

• 21.9 Avg MPG

• Lou's Terrian

  2017 GMC Terrain SLE 3.6L V6 GAS Automatic 6 Speed Sport Utility
  Added Jun 2019 • 37 Fuel-ups

  Property of luigi49221

• 23.1 Avg MPG

• Terrain

  2017 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jun 2020 • 7 Fuel-ups

  Property of mkcottle

• 24.0 Avg MPG

• 2017 Terrain

  2017 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Feb 2018 • 114 Fuel-ups

  Property of Firefotog

• 22.7 Avg MPG

• 2017 Terrain

  2017 GMC Terrain SLT 2.4L L4 FLEX Automatic 6 Speed
  Added Jul 2017 • 97 Fuel-ups

  Property of gtosuper98

• 21.6 Avg MPG

• 2017 Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Apr 2017 • 95 Fuel-ups

  Property of John733

• 20.6 Avg MPG

• My Terrain

  2017 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Oct 2019 • 19 Fuel-ups

  Property of jeff6605

• 22.2 Avg MPG

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