2015 head-to-head · Two-Seater
2015 Audi R8 Spyder 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 Spyder 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 Spyder
- Mercedes-Benz SLS AMG
Side by side
| Audi R8 Spyder | 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 Spyder vs Mercedes-Benz SLS AMG across model years
- Audi R8 Spyder
- 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 Spyder ranks 22nd and the Mercedes-Benz SLS AMG 26th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi R8 Spyder or the 2015 Mercedes-Benz SLS AMG?
Measured by cost to drive, the Audi R8 Spyder. The Audi R8 Spyder 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 Spyder 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 Spyder and $3,950 for the Mercedes-Benz SLS AMG.
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