1991 Pontiac Firebird/Trans Am/Formula
7 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| Firebird/Trans Am | 15 | 24 | 18 | Regular Gasoline | Rear-Wheel Drive | 5L 8-cyl | Automatic 4-spd |
| Firebird/Trans Am | 16 | 25 | 19 | Regular Gasoline | Rear-Wheel Drive | 3.1L 6-cyl | Automatic 4-spd |
| Firebird/Trans Am | 15 | 24 | 18 | Regular Gasoline | Rear-Wheel Drive | 3.1L 6-cyl | Manual 5-spd |
| Firebird/Trans Am | 15 | 22 | 18 | Premium Gasoline | Rear-Wheel Drive | 5L 8-cyl | Automatic 4-spd |
| Firebird/Trans Am | 15 | 24 | 18 | Regular Gasoline | Rear-Wheel Drive | 5L 8-cyl | Manual 5-spd |
| Firebird/Trans Am | 15 | 24 | 18 | Premium Gasoline | Rear-Wheel Drive | 5L 8-cyl | Manual 5-spd |
| Firebird/Trans Am | 15 | 22 | 17 | Premium Gasoline | Rear-Wheel Drive | 5.7L 8-cyl | Automatic 4-spd |