Based on data from 24 vehicles, 1,361 fuel-ups and 420,417 miles of driving, the 2020 Mercedes-Benz GLC300 gets a combined Avg MPG of 23.18 with a 0.20 MPG margin of error.

Any Engine Type 2.0L L4 GAS (23) L4 ELECTRIC/GAS (1) Any Body Style Coupe (1) Sport Utility (5) Any Submodel 1.5 RS CVT Honda SENSING (1) Base (8) 4Matic (15)

Below you can see a distribution of the fuel-ups with 87 outliers (6.01%) removed.

Following shows the average MPG of each of the 24 vehicles in the system.

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• 2020 GLC300W4

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Mar 2025 • 6 Fuel-ups

  Property of TheBenzGuySM

• 21.6 Avg MPG

• Mercedes GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Apr 2024 • 13 Fuel-ups

  Property of jlamb740

• 20.6 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Dec 2024 • 25 Fuel-ups

  Property of WinWithMark

• 25.4 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Jul 2022 • 73 Fuel-ups

  Property of 2ndLight

• 21.2 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Oct 2020 • 216 Fuel-ups

  Property of jaromer

• 24.6 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Sep 2022 • 60 Fuel-ups

  Property of Thero

• 20.6 Avg MPG

• GLC 300 4MATIC

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Jan 2023 • 37 Fuel-ups

  Property of GeoVile

• 21.6 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed
  Added Aug 2024 • 25 Fuel-ups

  Property of iceguy

• 25.7 Avg MPG

• GLC300 2020

  2020 Mercedes-Benz GLC300 1.5 RS CVT Honda SENSING 2.0L L4 GAS Automatic 9 Speed
  Added Aug 2020 • 111 Fuel-ups

  Property of marcelolucas

• 19.1 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Aug 2020 • 192 Fuel-ups

  Property of DWestphal

• 23.8 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Jan 2025 • 9 Fuel-ups

  Property of graphene_boss

• 19.2 Avg MPG

• 1. GLC 300e

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Dec 2020 • 72 Fuel-ups

  Property of skyduck

• 28.2 Avg MPG

• 2020 GLC300

  2020 Mercedes-Benz GLC300 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Feb 2024 • 83 Fuel-ups

  Property of TheBenzGuySM

• 21.9 Avg MPG

• Kang Jiawei

  2020 Mercedes-Benz GLC300 4Matic L4 ELECTRIC/GAS Automatic 9 Speed Sport Utility
  Added Nov 2022 • 43 Fuel-ups

  Property of willydekido

• 66.9 Avg MPG

• Devil's own Benz

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed Sport Utility
  Added Jun 2020 • 145 Fuel-ups

  Property of Greatnewcar

• 24.7 Avg MPG

• My GLC300

  2020 Mercedes-Benz GLC300 4Matic 2.0L L4 GAS Automatic 9 Speed
  Added Feb 2020 • 106 Fuel-ups

  Property of ahowie2000

• 21.8 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

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