2004 Chevrolet Impala
4 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| Impala | 19 | 29 | 22 | Regular Gasoline | Front-Wheel Drive | 3.4L 6-cyl | Automatic 4-spd |
| Impala | 18 | 28 | 21 | Regular Gasoline | Front-Wheel Drive | 3.8L 6-cyl | Automatic 4-spd |
| Impala | 16 | 26 | 20 | Premium Gasoline | Front-Wheel Drive | 3.8L 6-cyl Supercharged | Automatic 4-spd |
| Impala Police | 17 | 26 | 20 | Regular Gasoline | Front-Wheel Drive | 3.8L 6-cyl | Automatic 4-spd |