2020 · Two-Seater · Gas
2020 Mercedes-Benz SL-Class MPG & fuel economy
The 2020 Mercedes-Benz SL-Class is a two-seater offered in 2 EPA-rated configurations. The most efficient version returns 22 MPG combined (20 city / 28 highway) on premium gasoline. Across the lineup, combined ratings range from 20 to 22 MPG. That's down 1 MPG from the 2019 model. Among 39 two-seaters rated for 2020, it ranks 11th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,693 a year to fuel.
What will it cost you?
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Fuel average
The 2020 Mercedes-Benz SL-Class's fuel average is 9.4 km/L (10.7 L/100 km), or 22 MPG combined: 8.5 km/L in the city and 11.9 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 20 | 8.5 | 11.8 |
| Highway | 28 | 11.9 | 8.4 |
| Combined | 22 | 9.4 | 10.7 |
How it ranks among 2020 Two-Seaters
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
SL-Class MPG across model years
Full history →2 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 3.0L 6-cyl turbo · 9-speed automatic SL450 |
Gas | 20 MPG | 28 MPG | 22 MPG | — | $2,693 |
| RWD · 4.7L 8-cyl turbo · 9-speed automatic SL550 |
Gas | 17 MPG | 25 MPG | 20 MPG | — | $2,962 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 3.0L 6-cyl turbo
- Transmission
- 9-speed automatic
- Drivetrain
- RWD
- Tailpipe CO₂
- 395 g/mi
- EPA fuel economy score
- 4/10
- EPA greenhouse gas score
- 4/10
2020 Mercedes-Benz SL-Class vs. rivals
Compare the 2020 SL-Class
With any other car from any year, including other SL-Class model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2020 Mercedes-Benz SL-Class?
Up to 22 MPG combined (20 city / 28 highway); ratings range from 20 to 22 MPG depending on configuration.
What fuel does the 2020 Mercedes-Benz SL-Class use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2020 Mercedes-Benz SL-Class?
The 2020 Mercedes-Benz SL-Class's fuel average is 9.4 km/L (10.7 L/100 km), or 22 MPG combined: 8.5 km/L in the city and 11.9 km/L on the highway.
How much does it cost to fuel the 2020 Mercedes-Benz SL-Class per year?
About $2,693 at 15,000 miles a year with $3.95/gal premium gas, or $17.95 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.