2026 BMW M850i xDrive Convertible vs 2026 Porsche 911 Carrera 4S
| EPA figure | 2026 BMW M850i xDrive Convertible | 2026 Porsche 911 Carrera 4S |
|---|---|---|
| Model year | 2026 | 2026 |
| Body · drive | Subcompact · All-Wheel Drive · Gas | Minicompact · All-Wheel Drive · Gas |
| Combined MPG | 19 | 20 |
| City / highway MPG | 17 / 24 | 17 / 24 |
| Fuel a year | $4,350 | $4,100 |
| Tailpipe CO₂ (g/mi) | 456 | 453 |
| Engine | 4.4 L 8-cyl turbo | 3.0 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.