2017 head-to-head · Two-Seater
2017 Audi R8 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 · 5.2L 10-cyl · 7-speed dual-clutch · 17 MPG
The 2017 Mercedes-Benz SL-Class is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,576 a year to fuel (23 MPG), versus $3,485 for the 2017 Audi R8 (17 MPG). That's roughly $909 a year, or about $4,546 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 R8
- Mercedes-Benz SL-Class
Side by side
| Audi R8 | Mercedes-Benz SL-Class | |
|---|---|---|
| $3,485 | Your annual fuel cost | $2,576 |
| 17 MPG | Combined efficiency | 23 MPG |
| 14 MPG | City | 20 MPG |
| 22 MPG | Highway | 28 MPG |
| 519 g/mi | Tailpipe CO₂ (g/mi) | 383 g/mi |
| 3/10 | EPA fuel economy score | 5/10 |
| 3/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 5.2L 10-cyl | Engine / motor | 3.0L 6-cyl turbo |
| 7-speed dual-clutch | Transmission | 9-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 R8 vs Mercedes-Benz SL-Class across model years
- Audi R8
- 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 29 2017 two-seaters, the Audi R8 ranks 20th and the Mercedes-Benz SL-Class 10th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2017 Audi R8 or the 2017 Mercedes-Benz SL-Class?
Measured by cost to drive, the Mercedes-Benz SL-Class. The Audi R8 is rated 17 MPG combined and the Mercedes-Benz SL-Class 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2017 Audi R8 vs. the Mercedes-Benz SL-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,485 for the Audi R8 and $2,576 for the Mercedes-Benz SL-Class.
Audi R8 vs Mercedes-Benz SL-Class in other years
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