2025 BMW M8 Competition Coupe vs 2026 Porsche 911 Turbo S Cabriolet
| EPA figure | 2025 BMW M8 Competition Coupe | 2026 Porsche 911 Turbo S Cabriolet |
|---|---|---|
| Model year | 2025 | 2026 |
| Body · drive | Subcompact · All-Wheel Drive · Gas | Minicompact · All-Wheel Drive · Gas |
| Combined MPG | 17 | 18 |
| City / highway MPG | 15 / 22 | 15 / 22 |
| Fuel a year | $4,850 | $4,550 |
| Tailpipe CO₂ (g/mi) | 517 | 504 |
| Engine | 4.4 L 8-cyl turbo | 3.6 L 6-cyl turbo |
| Transmission | Automatic (S8) | Automatic (AM-S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.