2025 BMW X4 M40i vs 2027 Mercedes-Benz S500 4matic
| EPA figure | 2025 BMW X4 M40i | 2027 Mercedes-Benz S500 4matic |
|---|---|---|
| Model year | 2025 | 2027 |
| Body · drive | SUV · All-Wheel Drive · Hybrid | Large · All-Wheel Drive · Hybrid |
| Combined MPG | 23 | 23 |
| City / highway MPG | 22 / 26 | 20 / 28 |
| Fuel a year | $3,550 | $3,550 |
| Tailpipe CO₂ (g/mi) | 377 | 386 |
| Engine | 3.0 L 6-cyl turbo | 3.0 L 6-cyl turbo supercharged |
| Transmission | Automatic (S8) | Automatic 9-spd |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.