2021 BMW 540i xDrive vs 2021 BMW 840i Convertible
| EPA figure | 2021 BMW 540i xDrive | 2021 BMW 840i Convertible |
|---|---|---|
| Model year | 2021 | 2021 |
| Body · drive | Midsize · All-Wheel Drive · Gas | Subcompact · Rear-Wheel Drive · Gas |
| Combined MPG | 26 | 25 |
| City / highway MPG | 23 / 31 | 22 / 29 |
| Fuel a year | $3,150 | $3,300 |
| Tailpipe CO₂ (g/mi) | 337 | 360 |
| Engine | 3.0 L 6-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.