Based on data from 19 vehicles, 1,058 fuel-ups and 332,971 miles of driving, the 2020 Mercedes-Benz GLC300 gets a combined Avg MPG of 23.50 with a 0.22 MPG margin of error.

Any Engine Type 2.0L L4 GAS (18) L4 ELECTRIC/GAS (1) Any Body Style Coupe (1) Sport Utility (5) Any Submodel Sport (1) Base (5) 4Matic (13)

Below you can see a distribution of the fuel-ups with 68 outliers (6.04%) removed.

Following shows the average MPG of each of the 19 vehicles in the system.

• 2020 GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Feb 2024 • 22 Fuel-ups

  Property of TheBenzGuySM

• 25.2 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Oct 2020 • 164 Fuel-ups

  Property of jaromer

• 24.9 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Feb 2020 • 105 Fuel-ups

  Property of ahowie2000

• 21.8 Avg MPG

• Devil's own Benz

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Jun 2020 • 142 Fuel-ups

  Property of Greatnewcar

• 24.8 Avg MPG

• GLC300 2020

  2020 Mercedes-Benz GLC300 Sport 2.0L L4 GAS Automatic 9 Speed
  Added Aug 2020 • 90 Fuel-ups

  Property of marcelolucas

• 19.2 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Aug 2020 • 152 Fuel-ups

  Property of DWestphal

• 23.7 Avg MPG

• GLC 300 4MATIC

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Jan 2023 • 24 Fuel-ups

  Property of GeoVile

• 21.9 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Jul 2022 • 44 Fuel-ups

  Property of 2ndLight

• 21.6 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Sep 2022 • 41 Fuel-ups

  Property of Thero

• 21.0 Avg MPG

• 1. GLC 300e

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Dec 2020 • 49 Fuel-ups

  Property of skyduck

• 31.3 Avg MPG

• Kang Jiawei

  2020 Mercedes-Benz GLC300 4Matic L4 ELECTRIC/GAS Automatic 9 Speed Sport Utility
  Added Nov 2022 • 27 Fuel-ups

  Property of willydekido

• 73.4 Avg MPG

• Mercedes GLC300

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Apr 2021 • 72 Fuel-ups

  Property of Gizza

• 28.6 Avg MPG

• 2020 GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Nov 2021 • 96 Fuel-ups

  Property of goose10202

• 24.9 Avg MPG

• Joe's GLC300 Coupe

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed Coupe
  Added Dec 2020 • 107 Fuel-ups

  Property of jcg1005

• 26.0 Avg MPG

• Benz

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Oct 2021 • 12 Fuel-ups

  Property of Panthe1

• 18.8 Avg MPG

• GLC300

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Jul 2020 • 36 Fuel-ups

  Property of soloseven

• 21.4 Avg MPG

• 2020 GLC300W4

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Feb 2020 • 19 Fuel-ups

  Property of Holger

• 26.1 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Aug 2020 • 4 Fuel-ups

  Property of cheri3455

• 17.7 Avg MPG

• 2020 GLC300 AMG

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Oct 2020 • 5 Fuel-ups

  Property of Holger

• 24.4 Avg MPG