Based on data from 57 vehicles, 5,670 fuel-ups and 1,757,760 miles of driving, the 2014 GMC Terrain gets a combined Avg MPG of 20.99 with a 0.11 MPG margin of error.

Any Engine Type 2.4L L4 FLEX (3) 2.4L L4 GAS (26) 3.6L V6 FLEX (9) 3.6L V6 GAS (12) H4 GAS (2) V4 GAS (1) Any Body Style Sport Utility (21) Any Submodel Denali (6) SLE (23) SLT (26) Other (2)

Below you can see a distribution of the fuel-ups with 134 outliers (2.31%) removed.

Following shows the average MPG of each of the 57 vehicles in the system.

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• '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

• GMC

  2014 GMC Terrain SLT 3.6L V6 GAS Automatic 6 Speed
  Added Mar 2017 • 127 Fuel-ups

  Property of sandeepchava

• 21.6 Avg MPG

• My Terrain

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

  Property of taran6

• 23.4 Avg MPG

• GMC Terraine

  2014 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed
  Added Sep 2016 • 78 Fuel-ups

  Property of hal713

• 32.9 Avg MPG

• TERRAIN

  2014 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Aug 2016 • 72 Fuel-ups

  Property of ghulett

• 20.9 Avg MPG

• GMC Terrain

  2014 GMC Terrain Denali 2.4L L4 GAS Automatic 6 Speed
  Added Sep 2016 • 69 Fuel-ups

  Property of trainman

• 25.4 Avg MPG

• White Terrain

  2014 GMC Terrain Denali 3.6L V6 FLEX Automatic 6 Speed Sport Utility
  Added Jan 2014 • 218 Fuel-ups

  Property of MLL

• 20.3 Avg MPG

• Terrain

  2014 GMC Terrain SLE 2.4L L4 GAS Automatic 6 Speed
  Added Mar 2017 • 128 Fuel-ups

  Property of tally1028

• 19.2 Avg MPG

• Terrain 2014

  2014 GMC Terrain SLT 2.4L L4 GAS Automatic 6 Speed Sport Utility
  Added Jan 2025 • 86 Fuel-ups

  Property of wg500usa

• 23.4 Avg MPG

• White G M C

  2014 GMC Terrain SLT Automatic 6 Speed Sport Utility
  Added Oct 2017 • 69 Fuel-ups

  Property of Petrarca

• 19.0 Avg MPG

• Terrain2WDL4

  2014 GMC Terrain SLE GAS H4 Sport Utility (4 Door)
  Added Apr 2014 • 36 Fuel-ups

  Property of Terrain2WDL4

• 28.0 Avg MPG

• 4banger SLE2

  2014 GMC Terrain SLE 2.4L GAS L4 Automatic 6 Sport Utility (4 Door)
  Added Sep 2014 • 18 Fuel-ups

  Property of DwnSouth

• 24.2 Avg MPG

• Cupcake

  2014 GMC Terrain SLT 3.6L GAS V6 Automatic 6 Sport Utility (4 Door)
  Added Aug 2014 • 3 Fuel-ups

  Property of Nyte

• 19.0 Avg MPG

• Rental 2014

  2014 GMC Terrain SLE 3.6L V6 FLEX Automatic 6 Speed
  Added Sep 2016 • 7 Fuel-ups

  Property of gasguzzler2640

• 20.4 Avg MPG

• Michelle's Terrain

  2014 GMC Terrain
  Added May 2014 • 3 Fuel-ups

  Property of meesh11

• 22.7 Avg MPG

• Tim's Terrain

  2014 GMC Terrain GAS H4
  Added Jan 2014 • 5 Fuel-ups

  Property of TimCRV1998

• 21.0 Avg MPG

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