AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2010 Mercury Mariner
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $5,000–$7,500
The 2010 Mercury Mariner has notable issues with its steering and power train, as well as vulnerabilities in the fuel system. These problems, combined with high complaint counts, suggest reliability concerns.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| Fuel pump | 60,000–90,000 miles | $400–$600 | common |
| Steering torque sensor | 70,000–100,000 miles | $350–$500 | common |
| Front wheel bearing | 50,000–80,000 miles | $300–$450 | occasional |
| Engine system | 80,000–120,000 miles | $500–$700 | occasional |
| Power train | 90,000–130,000 miles | $700–$1,000 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake pad replacements
- Tire rotations and alignment
- Transmission fluid change
- Coolant system flush
- Spark plug replacement
- Air filter replacement
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Steering becomes heavier
- Loss of power
- Fuel smell inside cabin
- Grinding noise when steering
- Uneven tire wear
Generated by gpt-4o on 8/23/2026. Cost ranges are conservative estimates that account for typical regional variation.