AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2008 Hummer H3
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $9,000–$14,000
The 2008 Hummer H3 has notable issues with the electrical system and air bags, as indicated by the complaints and recalls. Blower motor overheating and hood louver detachment problems are common, impacting reliability.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| blower motor | 50,000–70,000 miles | $400–$700 | very common |
| hood louver | 40,000–60,000 miles | $200–$400 | common |
| electrical system | 60,000–90,000 miles | $500–$1,200 | common |
| air bags | 70,000–100,000 miles | $800–$1,500 | occasional |
| engine cooling | 60,000–80,000 miles | $300–$600 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter change
- Brake pad replacement
- Coolant flush
- Transmission fluid change
- Spark plug replacement
- Tire rotation
- Battery replacement
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Overheating blower motor
- Rattling hood louver
- Airbag warning light
- Engine rough idle
- Electrical shorts
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.