Mercury Mountaineer Power Train Problems
Owners have filed 385 complaints with NHTSA about power train problems on the Mercury Mountaineer across 13 model years. The 2002 model year has the most (144). The words owners use most often: “check transmission” (6% of reports).
- 385power train complaints
- —median miles at failure
- 22mention a crash
- 13mention an injury
- 1related recalls
- $3,850typical repair cost reported by owners
- 34%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Check transmission: mentioned in 22 of 385 complaints (6%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical power train repair on the Mercury Mountaineer at $3,850, and half of them between $2,300 and $4,650.
Based on 39 NHTSA complaints about this problem alone that state a repair bill or quote (2004–2021), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do power train problems happen?
Based on 306 complaints that reported the odometer reading.
How serious are the reports?
Of 385 complaints, 22 mention a crash, 7 a fire, 13 an injury.
Mercury Mountaineer power train complaints by model year
| Model year | Power Train complaints | Share of that year | Median miles |
|---|---|---|---|
| 2010 Mountaineer | 2 | 15% | 6,125 |
| 2008 Mountaineer | 9 | 9% | 54,410 |
| 2007 Mountaineer | 25 | 31% | 74,000 |
| 2006 Mountaineer | 39 | 33% | 53,000 |
| 2005 Mountaineer | 19 | 23% | 48,151 |
| 2004 Mountaineer | 64 | 30% | 66,924 |
| 2003 Mountaineer | 42 | 28% | 73,975 |
| 2002 Mountaineer | 144 | 39% | 77,592 |
| 2001 Mountaineer | 1 | 5% | 500 |
| 2000 Mountaineer | 15 | 12% | 59,976 |
| 1999 Mountaineer | 8 | 5% | 68,500 |
| 1998 Mountaineer | 9 | 4% | 33,568 |
| 1997 Mountaineer | 8 | 2% | 100,000 |
When owners reported it
Related recalls (1)
Power train:automatic transmission:cooling unit and lines
Model years: 2008
Problem: On certain sport utility vehicles equipped with the 4.6l engine and 6r transmission, the bolt securing the transmission oil cooler line fittings at the transmission may not have been sufficiently torqued during vehicle assembly. As a result, the bolt may loosen and the transmission oil cooler lines may disengage from the transmission, causing a transmission fluid leak.
Risk: If leaking transmission fluid contacts the catalytic converter, it may pose a risk of fire.
Fix: Dealers will inspect and have the transmission cooler line attachment bolt tightened free of charge. The recall began on august 30, 2007. Owners may contact ford at 1-800-392-3673.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
The contact owns a 2007 Mercury Mountaineer. The contact stated that after shifting the transmission from park(P) to reverse(R), the vehicle failed to respond. The contact removed and reinserted the fob key in the ignition to correct the failure. The vehicle was taken to an independent mechanic…
The truck bearing keep going out the spark plugs overloaded and I canât accelerate at times when Iâm driving it slows down then starts back up
The Transmission won't shift into 3rd and 4th gear, hitting hard into gears at starting, slipping begins after 35 mph..replaced torque converter.
started losing power ,did not want to go pas 30 miles per hr ,then it ramed up and came to a stop with no acceleration ,i shut it off then start it again and was able to get home at a low rate of speed while continuing to have these problems, another day while far away from home the engine rammed…
Body : to much rust, corrosion, on rear of truck other failure or detachment of exterior body like rear gate frame components, and other structural components that may present a safety hazard. Electrical :Â electrical systems and items such asa wiring and cable on or inside the door, ignition…
Frequently asked questions
Do all Mercury Mountaineers have power train problems?
No. NHTSA has 385 owner complaints about power train for the Mercury Mountaineer. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the Mercury Mountaineer power train?
Yes: 1 safety recall list power train. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
How much does it cost to fix power train problems on the Mercury Mountaineer?
Owners report a typical cost of $3,850 (half paid between $2,300 and $4,650), from 39 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about power train problems on the Mercury Mountaineer?
The most frequent phrase is “check transmission”, in 22 of 385 complaints.
Other Mercury Mountaineer problems
- Tires problems (327)
- Structure problems (283)
- Vehicle Speed Control problems (215)
- Electrical System problems (182)
- Engine and Engine Cooling problems (161)
- Seats problems (125)
See all Mercury Mountaineer problems.