AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2007 Mercury Mariner Hybrid
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $6,000–$12,000
The 2007 Mercury Mariner Hybrid demonstrates common issues with service brakes and the engine system, reflected in multiple complaints. Owners should be prepared for higher upkeep costs due to potential repair needs, especially related to these systems.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| service brakes | 60,000–100,000 miles | $300–$600 | very common |
| engine cooling | 80,000–120,000 miles | $500–$1,200 | common |
| electrical system | 70,000–110,000 miles | $400–$900 | common |
| hybrid propulsion system | 100,000–150,000 miles | $1,500–$4,000 | occasional |
| power train | 90,000–140,000 miles | $800–$2,000 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Replace brake pads annually
- Check hybrid system bi-annually
- Oil change every 5,000 miles
- Coolant system flush every 60,000 miles
- Inspect suspension every 30,000 miles
- Transmission fluid change every 60,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Grinding noise when braking
- Overheating engine
- Unexpected loss of power
- Electrical malfunctions
- Unusual hybrid system sounds
Generated by gpt-4o on 8/19/2026. Cost ranges are conservative estimates that account for typical regional variation.