- Transmission Slips, Engine Surges 5 complaints at an average of 48,970 miles in the 2006 Mercury Mountaineer.
- Radiator Leak 17 complaints at an average of 67,932 miles in the 2006 Mercury Mountaineer.
- Exhaust Manifold Broken 2 complaints at an average of 95,451 miles in the 2008 Mercury Mountaineer.
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