AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2002 Cadillac Sts
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $8,000–$12,000
The 2002 Cadillac STS has a below-average reliability rating, largely due to brake and hydraulic system issues. It has multiple owner complaints, though fewer major recalls. Expect significant maintenance costs for an aging luxury vehicle.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| brakes | 70,000–100,000 miles | $300–$500 | very common |
| hydraulic system | 60,000–90,000 miles | $250–$450 | common |
| electronic stability control | 80,000–120,000 miles | $300–$600 | occasional |
| steering | 70,000–110,000 miles | $200–$400 | occasional |
| engine cooling | 90,000–120,000 miles | $400–$800 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter change
- Brake pad inspection and replacement
- Transmission fluid change
- Coolant system flush
- Battery and electrical system check
- Air filter replacement
- Timing belt inspection
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Soft brake pedal feel
- Unstable steering response
- Persistent warning lights
- Coolant leaks
- Engine overheats frequently
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.