Mercedes-Benz SL450: MPG and fuel economy by year
The EPA has rated the Mercedes-Benz SL450 across 4 model years, from the 2017 Mercedes-Benz SL450 through the 2020 Mercedes-Benz SL450. The most recent 2020 Mercedes-Benz SL450 returns 22 combined MPG. The most efficient model year was the 2019 Mercedes-Benz SL450 at 23 MPG.
Pick a year below to open the full Mercedes-Benz SL450 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 SL450. 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 |
|---|---|---|---|---|---|
| 2020 | 2020 Mercedes-Benz SL450 | 22 MPG | 20 MPG | 28 MPG | $3,150 |
| 2019 | 2019 Mercedes-Benz SL450 | 23 MPG | 20 MPG | 28 MPG | $3,000 |
| 2018 | 2018 Mercedes-Benz SL450 | 23 MPG | 20 MPG | 28 MPG | $3,000 |
| 2017 | 2017 Mercedes-Benz SL450 | 23 MPG | 20 MPG | 28 MPG | $3,000 |
How the Mercedes-Benz SL450 compares against the Two Seaters class
Buyers usually compare the Mercedes-Benz SL450 against other cars in the same EPA class. The list below shows the most efficient cars in the Two Seaters class for the 2020 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.