2026 Cadillac CT4 V vs 2026 Porsche 911 Carrera 4 GTS Cabriolet
| EPA figure | 2026 Cadillac CT4 V | 2026 Porsche 911 Carrera 4 GTS Cabriolet |
|---|---|---|
| Model year | 2026 | 2026 |
| Body · drive | Compact · Rear-Wheel Drive · Gas | Minicompact · All-Wheel Drive · Gas |
| Combined MPG | 19 | 19 |
| City / highway MPG | 16 / 24 | 17 / 23 |
| Fuel a year | $4,350 | $4,350 |
| Tailpipe CO₂ (g/mi) | 478 | 469 |
| Engine | 3.6 L 6-cyl turbo | 3.6 L 6-cyl turbo |
| Transmission | Automatic (S10) | Automatic (AM-S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.