Based on data from 99 vehicles, 8,677 fuel-ups and 2,573,500 miles of driving, the 2012 GMC Terrain gets a combined Avg MPG of 20.84 with a 0.09 MPG margin of error.

Any Engine Type 2.4L L4 FLEX (21) 2.4L L4 GAS (25) 3.0L V6 FLEX (12) 3.0L V6 GAS (18) H2 GAS (1) L4 GAS (13) V6 GAS (1) Any Body Style Sedan (1) Sport Utility (28) Any Submodel SLE (42) SLT (42) Other (15)

Below you can see a distribution of the fuel-ups with 204 outliers (2.30%) removed.

Following shows the average MPG of each of the 99 vehicles in the system.

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• My Terrain (odometer is messed)

  2012 GMC Terrain SLT 3.0L V6 GAS Automatic 6 Speed
  Added Apr 2021 • 5 Fuel-ups

  Property of NightPig21

• 16.0 Avg MPG

• Terrain

  2012 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Dec 2014 • 26 Fuel-ups

  Property of ramesh457

• 17.5 Avg MPG

• Brad's Truck

  2012 GMC Terrain SLT 3.0L V6 GAS Automatic 6 Speed
  Added Mar 2017 • 594 Fuel-ups

  Property of bouse

• 21.1 Avg MPG

• My Terrain

  2012 GMC Terrain SLE 2.4L L4 FLEX Automatic 6 Speed
  Added Nov 2018 • 19 Fuel-ups

  Property of troymeekhof

• 24.2 Avg MPG

• KRISTIN

  2012 GMC Terrain SLT 3.0L V6 GAS Automatic 6 Speed Sport Utility
  Added Sep 2014 • 259 Fuel-ups

  Property of mhennessy

• 16.4 Avg MPG

• Terrain

  2012 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Aug 2019 • 62 Fuel-ups

  Property of adam728

• 21.2 Avg MPG

• Jake's High Country

  2012 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 203 Fuel-ups

  Property of jonesie8s

• 15.9 Avg MPG

• GMC Terrain

  2012 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Oct 2017 • 46 Fuel-ups

  Property of jgreiss

• 20.8 Avg MPG

• Terrain

  2012 GMC Terrain SLT 2.4L L4 FLEX Automatic 6 Speed Sport Utility
  Added May 2018 • 7 Fuel-ups

  Property of Gvkgj

• 77.4 Avg MPG

• Ma Ma's Terrain

  2012 GMC Terrain SLT 3.0L V6 FLEX Automatic 6 Speed
  Added Apr 2017 • 11 Fuel-ups

  Property of Moerygar

• 17.9 Avg MPG

• Angela's GMC

  2012 GMC Terrain SLE Automatic 6 Speed Sport Utility
  Added Jan 2019 • 9 Fuel-ups

  Property of skirkby

• 15.7 Avg MPG

• Bobile

  2012 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Aug 2018 • 10 Fuel-ups

  Property of fuferman

• 18.8 Avg MPG

• My Terrain

  2012 GMC Terrain SLE 2.4L L4 FLEX Automatic 6 Speed
  Added Jun 2018 • 34 Fuel-ups

  Property of jeffcgould

• 25.4 Avg MPG

• Janna's Terrain

  2012 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Nov 2017 • 397 Fuel-ups

  Property of heroldkelly

• 24.9 Avg MPG

• Terri

  2012 GMC Terrain SLT 3.0L V6 GAS Automatic 6 Speed Sport Utility
  Added Aug 2014 • 65 Fuel-ups

  Property of GF09

• 21.3 Avg MPG

• GMC Terrain

  2012 GMC Terrain SLT 3.0L V6 FLEX Automatic 6 Speed Sport Utility
  Added Jul 2017 • 38 Fuel-ups

  Property of energyfun

• 27.6 Avg MPG

• My Terrain

  2012 GMC Terrain SLT 3.0L V6 FLEX Automatic 6 Speed
  Added Jun 2018 • 3 Fuel-ups

  Property of jtixii

• 22.0 Avg MPG

• My Terrain

  2012 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jan 2018 • 35 Fuel-ups

  Property of Steven199

• 15.5 Avg MPG

• Rocky

  2012 GMC Terrain SLE 2.4L L4 FLEX Automatic 6 Speed Sport Utility
  Added Sep 2014 • 45 Fuel-ups

  Property of dougdr01

• 23.4 Avg MPG

• Peg Powell

  2012 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 65 Fuel-ups

  Property of Peg1971

• 21.9 Avg MPG

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