2008 Hummer H3
15MPG
Combined
3
Trims
Updated February 27, 2026
The 2008 Hummer H3 SUV provides 14–15 combined MPG depending on trim. We’ve compiled EPA fuel economy data, NHTSA safety ratings, and recall history so you can make an informed decision.
2008 Hummer H3 Specifications
| Spec | Value |
|---|---|
| Combined MPG | 14–15 combined MPG depending on trim |
| City MPG | 14 |
| Highway MPG | 18 |
| Body Style | SUV |
| Fuel Type | Regular |
| Drive | AWD/4WD |
| Available Trims | 3 |
Available Trims
| Trim | MPG (City/Hwy/Combined) | Engine | Transmission |
|---|---|---|---|
| Auto | 14/18/15 | 3.7L 5cyl | Automatic 4-spd |
| Man | 13/18/15 | 3.7L 5cyl | Manual 5-spd |
| Auto | 13/16/14 | 5.3L 8cyl | Automatic 4-spd |
Annual Fuel Cost
Based on EPA estimates, the 2008 Hummer H3 costs approximately $3,016 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.
Compare the 2008 Hummer H3
See how it stacks up against similar vehicles:
Other Model Years
- 2010 Hummer H3
- 2009 Hummer H3
- 2008 (this page)
- 2007 Hummer H3
- 2006 Hummer H3
Check Vehicle History
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