1990 Pontiac Grand Prix
5 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| Grand Prix | 15 | 26 | 19 | Regular Gasoline | Front-Wheel Drive | 3.1L 6-cyl | Manual 5-spd |
| Grand Prix | 19 | 27 | 22 | Regular Gasoline | Front-Wheel Drive | 2.3L 4-cyl | Automatic 3-spd |
| Grand Prix | 17 | 27 | 20 | Regular Gasoline | Front-Wheel Drive | 3.1L 6-cyl | Automatic 4-spd |
| Grand Prix Ste Turbo | 15 | 23 | 18 | Premium Gasoline | Front-Wheel Drive | 3.1L 6-cyl Turbo | Automatic 4-spd |
| Grand Prix Turbo | 15 | 23 | 18 | Premium Gasoline | Front-Wheel Drive | 3.1L 6-cyl Turbo | Automatic 4-spd |