2013 BMW 550i vs 2013 BMW 640i Convertible
| EPA figure | 2013 BMW 550i | 2013 BMW 640i Convertible |
|---|---|---|
| Model year | 2013 | 2013 |
| Body · drive | Midsize · Rear-Wheel Drive · Gas | Subcompact · Rear-Wheel Drive · Gas |
| Combined MPG | 20 | 24 |
| City / highway MPG | 17 / 25 | 20 / 30 |
| Fuel a year | $4,100 | $3,400 |
| Tailpipe CO₂ (g/mi) | 454 | 375 |
| Engine | 4.4 L 8-cyl turbo | 3.0 L 6-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.