Based on data from 20 vehicles, 2,063 fuel-ups and 589,897 miles of driving, the 2014 Mercedes-Benz GLK350 gets a combined Avg MPG of 21.27 with a 0.16 MPG margin of error.

Any Engine Type 3.5L V6 GAS (20) Any Body Style Sport Utility (2) Any Submodel Base (10) 4Matic (10)

Below you can see a distribution of the fuel-ups with 45 outliers (2.13%) removed.

Following shows the average MPG of each of the 20 vehicles in the system.

• My GLK350

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Nov 2016 • 334 Fuel-ups

  Property of geisha67

• 22.0 Avg MPG

• Tom's GLK350

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed Sport Utility
  Added Aug 2014 • 114 Fuel-ups

  Property of Tcroly

• 23.7 Avg MPG

• Mercedes Benz GLK350

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed
  Added May 2025 • 14 Fuel-ups

  Property of OCNLVR

• 24.7 Avg MPG

• Heidi

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Aug 2023 • 85 Fuel-ups

  Property of Lord_Commander

• 23.0 Avg MPG

• My GLK350

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Feb 2017 • 496 Fuel-ups

  Property of Gkallos

• 20.7 Avg MPG

• My GLK350

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed
  Added Aug 2020 • 13 Fuel-ups

  Property of Zero64

• 29.2 Avg MPG

• My GLK350

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Jan 2024 • 6 Fuel-ups

  Property of billneu08

• 23.8 Avg MPG

• GLK 350

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed
  Added Sep 2016 • 338 Fuel-ups

  Property of plworks

• 21.5 Avg MPG

• My GLK350

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Mar 2019 • 30 Fuel-ups

  Property of nora0406

• 22.4 Avg MPG

• My GLK350

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Feb 2018 • 192 Fuel-ups

  Property of chirogreg

• 21.9 Avg MPG

• Mercedes-Benz

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Mar 2017 • 116 Fuel-ups

  Property of labielich

• 23.9 Avg MPG

• My GLK350

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed
  Added Mar 2018 • 19 Fuel-ups

  Property of miraissa10

• 25.1 Avg MPG

• Mercedes Benz GLK 350

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed
  Added Mar 2017 • 122 Fuel-ups

  Property of miraissa10

• 24.9 Avg MPG

• My GLK350

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Jun 2017 • 41 Fuel-ups

  Property of Michael0057

• 21.8 Avg MPG

• My GLK350

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Jun 2017 • 35 Fuel-ups

  Property of vrmz85

• 20.2 Avg MPG

• GLK 350 (2014)

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed
  Added Aug 2016 • 133 Fuel-ups

  Property of craiglaw

• 18.1 Avg MPG

• Silver

  2014 Mercedes-Benz GLK350 4Matic 3.5L V6 GAS Automatic 7 Speed
  Added Sep 2016 • 145 Fuel-ups

  Property of alone4

• 23.8 Avg MPG

• Stacy Owens

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed
  Added Oct 2018 • 21 Fuel-ups

  Property of stacyowens

• 23.7 Avg MPG

• Mercedes-Benz Glk

  2014 Mercedes-Benz GLK350 3.5L V6 GAS Automatic 7 Speed Sport Utility
  Added Jul 2015 • 31 Fuel-ups

  Property of chasingrabbits

• 20.1 Avg MPG

• GLK350

  2014 Mercedes-Benz GLK350 3.5L GAS V6 Automatic 7 Sport Utility (4 Door)
  Added Jul 2014 • 9 Fuel-ups

  Property of morriru

• 22.2 Avg MPG