2020 Mercedes-Benz C300 MPG
EPA-rated · verified snapshot 2026-08-30 · Compact Cars
The 2020 Mercedes-Benz C300 gets 28 MPG combined — 24 city and 35 highway — in its most efficient configuration (2.0L · 4-cyl · Automatic 9-spd · Rear-Wheel Drive).
City24 MPG
Highway35 MPG
$2,700Fuel cost / yr (EPA est.)
315 g/miCO₂
PremiumFuel
$-2,5005-yr fuel cost vs. average vehicle
6 / 10EPA Fuel Economy & GHG score
13 ft³Cargo volume
90 ft³Passenger volume
Where it sits among compact cars (2020)
Compared with the 2019 model, the 2020 C300 is +1 MPG better at its best.
FAQ
Where does the 2020 C300 rank among compact cars for MPG?
The 2020 C300's 28 MPG combined is above the compact cars average of 25.6 MPG for 2020.
How much does it cost to fuel a 2020 C300 per year?
Based on EPA assumptions (15,000 miles/year), estimated annual fuel cost is $2,700 for the most efficient trim.
What is the city and highway MPG of the 2020 C300?
The most efficient trim is rated 24 MPG city and 35 MPG highway.