1991 Pontiac Sunbird Convertible vs 1991 Porsche 928 S4
| EPA figure | 1991 Pontiac Sunbird Convertible | 1991 Porsche 928 S4 |
|---|---|---|
| Model year | 1991 | 1991 |
| Body · drive | Subcompact · Front-Wheel Drive · Gas | Minicompact · Rear-Wheel Drive · Gas |
| Combined MPG | 20 | 15 |
| City / highway MPG | 17 / 26 | 14 / 17 |
| Fuel a year | $3,350 | $5,500 |
| Tailpipe CO₂ (g/mi) | 444 | 592 |
| Engine | 3.1 L 6-cyl | 5.0 L 8-cyl |
| Transmission | Manual 5-spd | Automatic 4-spd |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.