2008 Hummer H3
3 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| H3 4WD | 14 | 18 | 15 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 3.7L 5-cyl | Automatic 4-spd |
| H3 4WD | 13 | 18 | 15 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 3.7L 5-cyl | Manual 5-spd |
| H3 4WD | 13 | 16 | 14 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 5.3L 8-cyl | Automatic 4-spd |