AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2004 Porsche 911 Carrera
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $12,000–$20,000
The 2004 Porsche 911 Carrera has an average reliability rating. Notable issues include occasional engine and cooling failures. A recall for the front strut may affect those using aftermarket kits, highlighting suspension concerns. Given these observations, the vehicle's ownership costs align with moderate expectations for its class.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| engine cooling | 70,000–90,000 miles | $1,000–$2,500 | common |
| air bags | 85,000–110,000 miles | $800–$1,600 | occasional |
| vehicle speed control | 40,000–70,000 miles | $600–$1,400 | rare |
| suspension | 80,000–100,000 miles | $1,500–$3,000 | rare |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake fluid replacement
- Spark plug replacement
- Transmission servicing
- Coolant system flush
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Overheating engine issues
- Airbag warning lights
- Unusual suspension noises
Generated by gpt-4o on 6/18/2026. Cost ranges are conservative estimates that account for typical regional variation.