Based on data from 29 vehicles, 876 fuel-ups and 237,513 miles of driving, the 2020 GMC Terrain gets a combined Avg MPG of 24.47 with a 0.27 MPG margin of error.

Any Engine Type 1.5L L4 GAS (19) 2.0L L4 GAS (7) Any Body Style Sport Utility (9) Any Submodel Denali (2) SLE (10) SLT (17)

Below you can see a distribution of the fuel-ups with 50 outliers (5.40%) removed.

Following shows the average MPG of each of the 29 vehicles in the system.

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• My Terrain

  2020 GMC Terrain Denali 2.0L L4 GAS Automatic 9 Speed
  Added Sep 2020 • 47 Fuel-ups

  Property of mjh007

• 25.4 Avg MPG

• GMC Terrain SLT

  2020 GMC Terrain SLT 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Nov 2020 • 61 Fuel-ups

  Property of Arik74

• 21.3 Avg MPG

• My Terrain

  2020 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed
  Added Sep 2021 • 74 Fuel-ups

  Property of Blacksmith13

• 29.3 Avg MPG

• 2020 GMC Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
  Added Jul 2020 • 60 Fuel-ups

  Property of fredgannon

• 25.1 Avg MPG

• 2020 Terrain

  2020 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed Sport Utility
  Added Aug 2020 • 47 Fuel-ups

  Property of ashleymouton

• 24.4 Avg MPG

• Terrain

  2020 GMC Terrain SLT 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Sep 2020 • 62 Fuel-ups

  Property of Glock32

• 22.8 Avg MPG

• My Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
  Added Aug 2020 • 35 Fuel-ups

  Property of JessicaMarie

• 20.8 Avg MPG

• My Terrain

  2020 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed
  Added Apr 2020 • 112 Fuel-ups

  Property of plonker2008

• 23.2 Avg MPG

• 2020 Terrain

  2020 GMC Terrain SLE 1.5L L4 GAS Automatic 9 Speed
  Added Jun 2021 • 14 Fuel-ups

  Property of bjames69firebird

• 27.7 Avg MPG

• My Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
  Added Mar 2021 • 27 Fuel-ups

  Property of sunnykub

• 29.6 Avg MPG

• Terrain

  2020 GMC Terrain SLT 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Nov 2020 • 54 Fuel-ups

  Property of Daishi

• 26.7 Avg MPG

• My Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
  Added Mar 2020 • 80 Fuel-ups

  Property of trains2007

• 24.8 Avg MPG

• Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed Sport Utility
  Added Feb 2020 • 16 Fuel-ups

  Property of dmarbes

• 25.7 Avg MPG

• Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed Sport Utility
  Added Jun 2020 • 42 Fuel-ups

  Property of Messiah66

• 31.7 Avg MPG

• My Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
  Added Jun 2020 • 38 Fuel-ups

  Property of phillyturbosix

• 24.6 Avg MPG

• My Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
  Added Dec 2020 • 47 Fuel-ups

  Property of koolkev

• 19.2 Avg MPG

• 2020 GMC Terrain

  2020 GMC Terrain SLT 2.0L L4 GAS Automatic 9 Speed
  Added Apr 2021 • 10 Fuel-ups

  Property of dlav_ca

• 24.6 Avg MPG

• GMC Terrain

  2020 GMC Terrain SLE Automatic 9 Speed Sport Utility
  Added Jul 2020 • 39 Fuel-ups

  Property of lizhbunce

• 27.0 Avg MPG

• My Terrain

  2020 GMC Terrain SLT
  Added Jan 2020 • 21 Fuel-ups

  Property of wrjsn

• 24.6 Avg MPG

• My Terrain

  2020 GMC Terrain SLT 1.5L L4 GAS Automatic 9 Speed
  Added Aug 2021 • 4 Fuel-ups

  Property of shawnkent18

• 28.0 Avg MPG

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