Mercedes-Benz C300 Convertible: MPG and fuel economy by year
The EPA has rated the Mercedes-Benz C300 Convertible across 7 model years, from the 2017 Mercedes-Benz C300 Convertible through the 2023 Mercedes-Benz C300 Convertible. The most recent 2023 Mercedes-Benz C300 Convertible returns 24 combined MPG. The most efficient model year was the 2021 Mercedes-Benz C300 Convertible at 26 MPG.
Pick a year below to open the full Mercedes-Benz C300 Convertible page for that model year. Each year page covers combined, city, and highway MPG, the trim variants the EPA rates separately, the annual fuel cost across three driving patterns, and a year-over-year comparison so you can see whether the car has improved.
Fuel economy by model year
Combined MPG, city MPG, highway MPG, and the EPA's estimated annual fuel cost for every model year of the Mercedes-Benz C300 Convertible. Click any year to see the full breakdown for that model year, including trim variants, the drivetrain, and a comparison against other vehicles in its segment.
| Year | Model | Combined MPG | City | Highway | Annual fuel cost |
|---|---|---|---|---|---|
| 2023 | 2023 Mercedes-Benz C300 Convertible | 24 MPG | 21 MPG | 29 MPG | $2,900 |
| 2022 | 2022 Mercedes-Benz C300 Convertible | 24 MPG | 21 MPG | 28 MPG | $2,900 |
| 2021 | 2021 Mercedes-Benz C300 Convertible | 26 MPG | 23 MPG | 31 MPG | $2,650 |
| 2020 | 2020 Mercedes-Benz C300 Convertible | 24 MPG | 21 MPG | 29 MPG | $2,900 |
| 2019 | 2019 Mercedes-Benz C300 Convertible | 24 MPG | 21 MPG | 29 MPG | $2,900 |
| 2018 | 2018 Mercedes-Benz C300 Convertible | 25 MPG | 22 MPG | 29 MPG | $2,750 |
| 2017 | 2017 Mercedes-Benz C300 Convertible | 26 MPG | 23 MPG | 31 MPG | $2,650 |
How the Mercedes-Benz C300 Convertible compares against the Subcompact Cars class
Buyers usually compare the Mercedes-Benz C300 Convertible against other cars in the same EPA class. The list below shows the most efficient cars in the Subcompact Cars class for the 2023 model year, the latest year on this page. Each link opens the full page for that car.
Source: U.S. EPA fuel economy dataset. Annual fuel cost assumes 15,000 miles of driving per year and a 55% city, 45% highway split.