AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2003 Infiniti I30
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $4,000–$8,000
The 2003 Infiniti I30 has moderate reliability due to recall issues with airbag inflators and minor engine complaints. However, the low number of complaints indicates a generally stable vehicle, with costs concentrated around expected maintenance.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| Passenger airbag inflator | Any mileage | $0–$0 | very common |
| Engine | 120,000–150,000 miles | $500–$2,000 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter change every 5,000 miles
- Brake fluid replacement every 2 years
- Replace spark plugs at 105,000 miles
- Transmission fluid change every 60,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Erratic engine idling
- Warning lights for airbag
- Poor engine performance
Generated by gpt-4o on 8/20/2026. Cost ranges are conservative estimates that account for typical regional variation.