2015 head-to-head · Two-Seater
2015 Audi R8 vs Mercedes-Benz SLS AMG
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
RWD · 6.2L 8-cyl · 7-speed dual-clutch · 15 MPG
The 2015 Audi R8 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $3,485 a year to fuel (17 MPG), versus $3,950 for the 2015 Mercedes-Benz SLS AMG (15 MPG). That's roughly $465 a year, or about $2,324 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 SLS AMG
Side by side
| Audi R8 | Mercedes-Benz SLS AMG | |
|---|---|---|
| $3,485 | Your annual fuel cost | $3,950 |
| 17 MPG | Combined efficiency | 15 MPG |
| 14 MPG | City | 13 MPG |
| 23 MPG | Highway | 19 MPG |
| 538 g/mi | Tailpipe CO₂ (g/mi) | 589 g/mi |
| 4/10 | EPA fuel economy score | 3/10 |
| 4/10 | EPA greenhouse gas score | 3/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.2L 8-cyl | Engine / motor | 6.2L 8-cyl |
| 7-speed dual-clutch | Transmission | 7-speed dual-clutch |
| 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 SLS AMG across model years
- Audi R8
- Mercedes-Benz SLS AMG
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 R8 ranks 21st and the Mercedes-Benz SLS AMG 26th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi R8 or the 2015 Mercedes-Benz SLS AMG?
Measured by cost to drive, the Audi R8. The Audi R8 is rated 17 MPG combined and the Mercedes-Benz SLS AMG 15 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Audi R8 vs. the Mercedes-Benz SLS AMG per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,485 for the Audi R8 and $3,950 for the Mercedes-Benz SLS AMG.
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