2018 BMW 640i xDrive Convertible vs 2018 BMW 650i Gran Coupe
| EPA figure | 2018 BMW 640i xDrive Convertible | 2018 BMW 650i Gran Coupe |
|---|---|---|
| Model year | 2018 | 2018 |
| Body · drive | Subcompact · All-Wheel Drive · Gas | Compact · Rear-Wheel Drive · Gas |
| Combined MPG | 22 | 20 |
| City / highway MPG | 19 / 28 | 17 / 25 |
| Fuel a year | $3,750 | $4,100 |
| Tailpipe CO₂ (g/mi) | 396 | 449 |
| Engine | 3.0 L 6-cyl turbo | 4.4 L 8-cyl turbo |
| Transmission | Automatic (S8) | Automatic (S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.