AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2004 Infiniti I35
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $4,500–$9,000
The 2004 Infiniti I35 is rated below-average due to multiple airbag recalls and frequent owner complaints about the electrical system and engine issues. Recalls suggest safety concerns, particularly with airbags, while complaint data emphasizes reliability challenges.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| Airbags | Any mileage | $200–$1,000 | very common |
| Electrical system | 50,000–100,000 miles | $300–$1,500 | common |
| Engine | 70,000–120,000 miles | $500–$2,500 | common |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter change
- Brake fluid replacement
- Transmission fluid change
- Tire rotation and alignment
- Coolant replacement
- Spark plug replacement
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Airbag warning light
- Electrical system malfunctions
- Engine stalling or misfires
- Unresponsive air conditioning
- Unusual vibration when driving
Generated by gpt-4o on 8/20/2026. Cost ranges are conservative estimates that account for typical regional variation.