2003 · Two-Seater · Gas
2003 Mercedes-Benz SLK-Class MPG & fuel economy
The 2003 Mercedes-Benz SLK-Class is a two-seater offered in 5 EPA-rated configurations. The most efficient version returns 22 MPG combined (19 city / 26 highway) on premium gasoline. Across the lineup, combined ratings range from 17 to 22 MPG. That's down 1 MPG from the 2002 model. Among 25 two-seaters rated for 2003, it ranks 4th 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?
Your mileage and prices are saved and used across the site.
Fuel average
The 2003 Mercedes-Benz SLK-Class's fuel average is 9.4 km/L (10.7 L/100 km), or 22 MPG combined: 8.1 km/L in the city and 11.1 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 19 | 8.1 | 12.4 |
| Highway | 26 | 11.1 | 9.0 |
| Combined | 22 | 9.4 | 10.7 |
How it ranks among 2003 Two-Seaters
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
SLK-Class MPG across model years
Full history →5 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 2.3L 4-cyl · 5-speed automatic SLK230 Kompressor |
Gas | 19 MPG | 26 MPG | 22 MPG | — | $2,693 |
| RWD · 2.3L 4-cyl · 6-speed manual SLK230 Kompressor |
Gas | 17 MPG | 25 MPG | 20 MPG | — | $2,962 |
| RWD · 3.2L 6-cyl · 5-speed automatic SLK320 |
Gas | 18 MPG | 24 MPG | 20 MPG | — | $2,962 |
| RWD · 3.2L 6-cyl · 6-speed manual SLK320 |
Gas | 15 MPG | 24 MPG | 18 MPG | — | $3,292 |
| RWD · 3.2L 6-cyl · 5-speed automatic SLK32 AMG |
Gas | 15 MPG | 21 MPG | 17 MPG | — | $3,485 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 2.3L 4-cyl
- Transmission
- 5-speed automatic
- Drivetrain
- RWD
- Passenger volume
- 48 cu ft
- Cargo volume
- 10 cu ft
- Tailpipe CO₂
- 404 g/mi
2003 Mercedes-Benz SLK-Class vs. rivals
Compare the 2003 SLK-Class
With any other car from any year, including other SLK-Class model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2003 Mercedes-Benz SLK-Class?
Up to 22 MPG combined (19 city / 26 highway); ratings range from 17 to 22 MPG depending on configuration.
What fuel does the 2003 Mercedes-Benz SLK-Class use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2003 Mercedes-Benz SLK-Class?
The 2003 Mercedes-Benz SLK-Class's fuel average is 9.4 km/L (10.7 L/100 km), or 22 MPG combined: 8.1 km/L in the city and 11.1 km/L on the highway.
How much does it cost to fuel the 2003 Mercedes-Benz SLK-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.