2015 head-to-head · Two-Seater
2015 Audi R8 vs Porsche Cayman
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2015 Porsche Cayman is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,370 a year to fuel (25 MPG), versus $3,485 for the 2015 Audi R8 (17 MPG). That's roughly $1,115 a year, or about $5,576 over five years.
Your numbers
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Fuel cost over 10 years
- Audi R8
- Porsche Cayman
Side by side
| Audi R8 | Porsche Cayman | |
|---|---|---|
| $3,485 | Your annual fuel cost | $2,370 |
| 17 MPG | Combined efficiency | 25 MPG |
| 14 MPG | City | 22 MPG |
| 23 MPG | Highway | 31 MPG |
| 538 g/mi | Tailpipe CO₂ (g/mi) | 352 g/mi |
| 4/10 | EPA fuel economy score | 6/10 |
| 4/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.2L 8-cyl | Engine / motor | 2.7L 6-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 Porsche Cayman across model years
- Audi R8
- Porsche Cayman
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 Porsche Cayman 13th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi R8 or the 2015 Porsche Cayman?
Measured by cost to drive, the Porsche Cayman. The Audi R8 is rated 17 MPG combined and the Porsche Cayman 25 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Audi R8 vs. the Porsche Cayman per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,485 for the Audi R8 and $2,370 for the Porsche Cayman.
Audi R8 vs Porsche Cayman in other years
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