2025 Mercedes-Benz GLS450 4matic vs 2025 Porsche 911 Carrera
| EPA figure | 2025 Mercedes-Benz GLS450 4matic | 2025 Porsche 911 Carrera |
|---|---|---|
| Model year | 2025 | 2025 |
| Body · drive | SUV · All-Wheel Drive · Hybrid | Minicompact · Rear-Wheel Drive · Gas |
| Combined MPG | 21 | 21 |
| City / highway MPG | 19 / 24 | 18 / 25 |
| Fuel a year | $3,900 | $3,900 |
| Tailpipe CO₂ (g/mi) | 428 | 424 |
| Engine | 3.0 L 6-cyl turbo supercharged | 3.0 L 6-cyl turbo |
| Transmission | Automatic 9-spd | Automatic (AM-S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.