Based on data from 70 vehicles, 5,413 fuel-ups and 1,544,537 miles of driving, the 2011 GMC Terrain gets a combined Avg MPG of 21.39 with a 0.14 MPG margin of error.

Any Engine Type 2.4L L4 GAS (36) 3.0L V6 FLEX (9) GAS (1) L4 GAS (17) V6 GAS (4) Any Body Style Sport Utility (14) Any Submodel SLE (20) SLT (26) Other (24)

Below you can see a distribution of the fuel-ups with 175 outliers (3.13%) removed.

Following shows the average MPG of each of the 70 vehicles in the system.

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• Terrain

  2011 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 44 Fuel-ups

  Property of katiem2113

• 29.0 Avg MPG

• Terrain ('11)

  2011 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jan 2018 • 353 Fuel-ups

  Property of JIWatsonJr

• 22.3 Avg MPG

• My Terrain

  2011 GMC Terrain SLT 3.0L V6 FLEX Automatic 6 Speed
  Added Jan 2018 • 45 Fuel-ups

  Property of tschorn6

• 18.5 Avg MPG

• GMC Terrain

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Oct 2017 • 363 Fuel-ups

  Property of MixPix

• 19.7 Avg MPG

• GMC Terrain

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 95 Fuel-ups

  Property of pennypen

• 23.6 Avg MPG

• 2011 Terrain SLE-2

  2011 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jun 2011 • 206 Fuel-ups

  Property of hog

• 24.4 Avg MPG

• 2011 GMC Terrain SLE

  2011 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Sep 2016 • 5 Fuel-ups

  Property of CliffS

• 22.8 Avg MPG

• Rich Johnson

  2011 GMC Terrain SLT 3.0L V6 FLEX Automatic 6 Speed
  Added Mar 2017 • 86 Fuel-ups

  Property of RichCJohnson

• 18.7 Avg MPG

• My Terrain

  2011 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Aug 2017 • 19 Fuel-ups

  Property of bula77

• 24.2 Avg MPG

• GMC Terrain

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 3 Speed Sport Utility
  Added May 2016 • 62 Fuel-ups

  Property of kbesco

• 18.5 Avg MPG

• My Terrain

  2011 GMC Terrain SLT 3.0L V6 FLEX Automatic 6 Speed
  Added Oct 2017 • 7 Fuel-ups

  Property of lizzygb

• 20.4 Avg MPG

• My Terrain

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Sep 2017 • 14 Fuel-ups

  Property of heartnurse78

• 27.1 Avg MPG

• Gus

  2011 GMC Terrain SLT 3.0L V6 FLEX Automatic 6 Speed
  Added Mar 2017 • 103 Fuel-ups

  Property of kwarkentien

• 18.6 Avg MPG

• Wife

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jan 2017 • 19 Fuel-ups

  Property of TomT250

• 21.8 Avg MPG

• Terrain

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 62 Fuel-ups

  Property of bwstyles7882

• 30.0 Avg MPG

• Terrain

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Sep 2013 • 7 Fuel-ups

  Property of theTurtle

• 26.8 Avg MPG

• GMC?

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Dec 2015 • 15 Fuel-ups

  Property of Fossil56

• 18.8 Avg MPG

• Terrain

  2011 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Apr 2017 • 91 Fuel-ups

  Property of jengott

• 22.7 Avg MPG

• Anti-Terrain

  2011 GMC Terrain
  Added Jun 2011 • 125 Fuel-ups

  Property of captainzerocool

• 24.2 Avg MPG

• John

  2011 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 358 Fuel-ups

  Property of johnsridgeline

• 26.4 Avg MPG

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