2005 Pontiac Grand Prix
4 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| Grand Prix | 16 | 25 | 19 | Regular Gasoline | Front-Wheel Drive | 5.3L 8-cyl | Automatic (S4) |
| Grand Prix | 17 | 26 | 20 | Premium Gasoline | Front-Wheel Drive | 3.8L 6-cyl Supercharged | Automatic 4-spd |
| Grand Prix | 16 | 24 | 19 | Premium Gasoline | Front-Wheel Drive | 3.8L 6-cyl Supercharged | Automatic (S4) |
| Grand Prix | 18 | 27 | 21 | Regular Gasoline | Front-Wheel Drive | 3.8L 6-cyl | Automatic 4-spd |