2012 BMW 640i Convertible vs 2012 BMW 650i Convertible xDrive
| EPA figure | 2012 BMW 640i Convertible | 2012 BMW 650i Convertible xDrive |
|---|---|---|
| Model year | 2012 | 2012 |
| Body · drive | Compact · Rear-Wheel Drive · Gas | Compact · All-Wheel Drive · Gas |
| Combined MPG | 23 | 17 |
| City / highway MPG | 20 / 30 | 15 / 19 |
| Fuel a year | $3,550 | $4,850 |
| Tailpipe CO₂ (g/mi) | 386 | 523 |
| 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.