2020 Mercedes-Benz GLC300 MPG
EPA-rated · verified snapshot 2026-08-30 · Small Sport Utility Vehicle 2WD
The 2020 Mercedes-Benz GLC300 gets 24 MPG combined — 22 city and 29 highway — in its most efficient configuration (2.0L · 4-cyl · Automatic 9-spd · Rear-Wheel Drive).
City22 MPG
Highway29 MPG
$3,150Fuel cost / yr (EPA est.)
366 g/miCO₂
PremiumFuel
$-4,7505-yr fuel cost vs. average vehicle
5 / 10EPA Fuel Economy & GHG score
Where it sits among compact suvs (2020)
FAQ
Does the 2020 GLC300 get good gas mileage for its class?
The 2020 GLC300's 24 MPG combined is below the compact suvs average of 26.4 MPG for 2020.
How much does it cost to fuel a 2020 GLC300 per year?
Based on EPA assumptions (15,000 miles/year), estimated annual fuel cost is $3,150 for the most efficient trim.
What is the city and highway MPG of the 2020 GLC300?
The most efficient trim is rated 22 MPG city and 29 MPG highway.