2025 Porsche Panamera GTS vs 2026 BMW M4 Competition M xDrive Coupe
| EPA figure | 2025 Porsche Panamera GTS | 2026 BMW M4 Competition M xDrive Coupe |
|---|---|---|
| Model year | 2025 | 2026 |
| Body · drive | Large · All-Wheel Drive · Gas | Subcompact · All-Wheel Drive · Gas |
| Combined MPG | 18 | 18 |
| City / highway MPG | 16 / 24 | 16 / 23 |
| Fuel a year | $4,550 | $4,550 |
| Tailpipe CO₂ (g/mi) | 495 | 472 |
| Engine | 4.0 L 8-cyl turbo | 3.0 L 6-cyl turbo |
| Transmission | Automatic (AM-S8) | Automatic (S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.