AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2009 Mini Cooper S Convertible
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $5,000–$9,000
The 2009 Mini COOPER S Convertible shows below-average reliability due to its engine-related issues, supported by owner complaints. Other components like the ESC and power train also present concerns.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| engine | 60,000–100,000 miles | $1,500–$3,000 | very common |
| electronic stability control | 50,000–80,000 miles | $400–$900 | common |
| fuel system | 50,000–90,000 miles | $300–$700 | occasional |
| airbags | 70,000–100,000 miles | $800–$1,500 | rare |
Scheduled maintenance to budget
Routine items every owner should plan for.
- oil and filter change
- tire rotation and balance
- brake fluid replacement
- coolant system flush
- spark plug replacement
- timing chain inspection
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- engine misfiring
- ESC warning light
- fuel system odor
- airbag warning light
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.