Based on data from 54 vehicles, 5,458 fuel-ups and 1,696,958 miles of driving, the 2014 GMC Terrain gets a combined Avg MPG of 20.99 with a 0.12 MPG margin of error.

Any Engine Type 2.4L L4 FLEX (3) 2.4L L4 GAS (25) 3.6L V6 FLEX (8) 3.6L V6 GAS (12) H4 GAS (2) Any Body Style Sport Utility (19) Any Submodel Denali (6) SLE (22) SLT (24) Other (2)

Below you can see a distribution of the fuel-ups with 129 outliers (2.31%) removed.

Following shows the average MPG of each of the 54 vehicles in the system.

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• My 2014 Terrian

  2014 GMC Terrain SLE 2.4L L4 FLEX Automatic 6 Speed
  Added Sep 2017 • 206 Fuel-ups

  Property of EMatthews

• 23.5 Avg MPG

• Terrain

  2014 GMC Terrain SLE Automatic 6 Speed Sport Utility
  Added Mar 2018 • 160 Fuel-ups

  Property of hjrw

• 20.9 Avg MPG

• GMC Terrain

  2014 GMC Terrain SLT Automatic 6 Speed Sport Utility
  Added Dec 2018 • 381 Fuel-ups

  Property of diddly307

• 21.2 Avg MPG

• Kathy's Terrain

  2014 GMC Terrain SLT 3.6L V6 GAS Automatic 6 Speed
  Added Apr 2017 • 24 Fuel-ups

  Property of wallisart42

• 33.9 Avg MPG

• GMC Terrain XLT

  2014 GMC Terrain SLT 3.6L V6 FLEX Automatic 6 Speed Sport Utility
  Added Oct 2017 • 47 Fuel-ups

  Property of kjuhnke

• 17.5 Avg MPG

• Terrain

  2014 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 169 Fuel-ups

  Property of jamimb

• 24.0 Avg MPG

• Whitey

  2014 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Sep 2014 • 159 Fuel-ups

  Property of Ske1eter

• 25.4 Avg MPG

• Terrain

  2014 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 50 Fuel-ups

  Property of iaweir

• 23.6 Avg MPG

• My Terrain

  2014 GMC Terrain SLE 2.4L L4 FLEX Automatic 6 Speed
  Added Dec 2018 • 5 Fuel-ups

  Property of bdydrpd01

• 21.7 Avg MPG

• Beefcake

  2014 GMC Terrain SLT 3.6L V6 GAS Automatic 6 Speed Sport Utility
  Added Jun 2018 • 65 Fuel-ups

  Property of mchail

• 21.3 Avg MPG

• Terrain Denali

  2014 GMC Terrain Denali 3.6L V6 GAS Automatic 6 Speed
  Added Nov 2017 • 93 Fuel-ups

  Property of jb1515

• 19.5 Avg MPG

• My Terrain

  2014 GMC Terrain Denali 3.6L V6 GAS Automatic 6 Speed
  Added Mar 2017 • 141 Fuel-ups

  Property of tanyazari

• 22.4 Avg MPG

• Terrain

  2014 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Apr 2017 • 122 Fuel-ups

  Property of magoo91f

• 24.2 Avg MPG

• My Terrain

  2014 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Oct 2017 • 19 Fuel-ups

  Property of Dannyhindes

• 22.0 Avg MPG

• Terrain

  2014 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 61 Fuel-ups

  Property of lauraann

• 23.2 Avg MPG

• GMC Terrain

  2014 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Aug 2016 • 167 Fuel-ups

  Property of nstp97

• 21.4 Avg MPG

• Kelseys Baby Truck

  2014 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 33 Fuel-ups

  Property of Kaszmann

• 22.5 Avg MPG

• My Terrain

  2014 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Oct 2017 • 4 Fuel-ups

  Property of cedesgraham9

• 25.3 Avg MPG

• '14 Terrain

  2014 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Oct 2017 • 57 Fuel-ups

  Property of cashx3r0

• 25.3 Avg MPG

• Beasty

  2014 GMC Terrain SLT 3.6L V6 FLEX Automatic 6 Speed Sport Utility
  Added Jun 2017 • 26 Fuel-ups

  Property of westsiderider

• 21.2 Avg MPG

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