2018 BMW M4 Convertible vs 2018 BMW M550i xDrive
| EPA figure | 2018 BMW M4 Convertible | 2018 BMW M550i xDrive |
|---|---|---|
| Model year | 2018 | 2018 |
| Body · drive | Subcompact · Rear-Wheel Drive · Gas | Midsize · All-Wheel Drive · Gas |
| Combined MPG | 19 | 19 |
| City / highway MPG | 16 / 22 | 16 / 25 |
| Fuel a year | $4,350 | $4,350 |
| Tailpipe CO₂ (g/mi) | 481 | 454 |
| Engine | 3.0 L 6-cyl turbo | 4.4 L 8-cyl turbo |
| Transmission | Automatic (AM-S7) | Automatic (S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.