2025 Porsche 911 Turbo S Cabriolet vs 2027 Mercedes-Benz SL680 Maybach
| EPA figure | 2025 Porsche 911 Turbo S Cabriolet | 2027 Mercedes-Benz SL680 Maybach |
|---|---|---|
| Model year | 2025 | 2027 |
| Body · drive | Minicompact · All-Wheel Drive · Gas | Minicompact · All-Wheel Drive · Gas |
| Combined MPG | 16 | 16 |
| City / highway MPG | 14 / 20 | 13 / 20 |
| Fuel a year | $5,150 | $5,150 |
| Tailpipe CO₂ (g/mi) | 549 | 558 |
| Engine | 3.7 L 6-cyl turbo | 4.0 L 8-cyl turbo |
| Transmission | Automatic (AM-S8) | Automatic 9-spd |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.