2015 head-to-head · Two-Seater
2015 Audi TT Roadster vs Mercedes-Benz SL-Class
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 2.0L 4-cyl turbo · 6-speed dual-clutch · 26 MPG
The 2015 Audi TT Roadster is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,279 a year to fuel (26 MPG), versus $2,576 for the 2015 Mercedes-Benz SL-Class (23 MPG). That's roughly $297 a year, or about $1,486 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Audi TT Roadster
- Mercedes-Benz SL-Class
Side by side
| Audi TT Roadster | Mercedes-Benz SL-Class | |
|---|---|---|
| $2,279 | Your annual fuel cost | $2,576 |
| 26 MPG | Combined efficiency | 23 MPG |
| 22 MPG | City | 20 MPG |
| 31 MPG | Highway | 27 MPG |
| 345 g/mi | Tailpipe CO₂ (g/mi) | 393 g/mi |
| 6/10 | EPA fuel economy score | 5/10 |
| 6/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 6-speed dual-clutch | Transmission | 7-speed automatic |
| AWD | Drivetrain | RWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Audi TT Roadster vs Mercedes-Benz SL-Class across model years
- Audi TT Roadster
- Mercedes-Benz SL-Class
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Among 33 2015 two-seaters, the Audi TT Roadster ranks 9th and the Mercedes-Benz SL-Class 15th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi TT Roadster or the 2015 Mercedes-Benz SL-Class?
Measured by cost to drive, the Audi TT Roadster. The Audi TT Roadster is rated 26 MPG combined and the Mercedes-Benz SL-Class 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Audi TT Roadster vs. the Mercedes-Benz SL-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,279 for the Audi TT Roadster and $2,576 for the Mercedes-Benz SL-Class.
Audi TT Roadster vs Mercedes-Benz SL-Class in other years
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