2010 Mercury Mountaineer Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 15%of 13 total for the year
- Median mileage
- 6,125miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 2010 Mercury Mountaineer, 15% of the 13 complaints for this model year. Where a mileage was given, the median is 6,125 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Pulled into parking space, placed shifter in park, turned off ignition, released brake and vehicle rolled backwards as if not in park. Attempted to restart vehicle and no response. Set parking brake. Could not get vehicle to lock into park, shifter moved regardless of brake on or not and would not start. Moved shifter through entire range of gears and returned to park, vehicle still would not start and park would not hold. Called dealer and was told to have it towed in. Returned to vehicle and tried once more and it started and proceeded to respond normally. …”
NHTSA complaint #10460011, filed 2012-05, 6,125 miles“Rear differential is filling with water pass the fill plug. This is a garage kept car and never off road nor dirven in deep water. First time discovered at 22000 miles and the dealer replace the pinion seal and oil, but could not find the cause. Differential now making noise and again full of water past the fill plug. Searched online and found several people with the same problem with ford products. Dealer cannot find or not willing to find the cause. Called ford and they offer little to no support. …”
NHTSA complaint #11157272, filed 2018-12Related service bulletins
- 10160931May 10, 2019On vehicles equipped with an automatic transmission it is imperative that the converter pilot hub be greased with Motorcraft Multi-Purpose Grease Spray XL-5-A even if grease was…
- 10099463Mar 14, 20172009-2017 vehicles equipped with a 6r80, 6r100, 6r140 automatic transmission have an updated main control valve body overhaul procedure. Refer to workshop manual (wsm), section…
- 10055783Apr 7, 2014Lincoln/mercury/ford: there is fluid leaking around the transmission bulkhead connector sleeve, from the transmission. Model 2009-10 expedition, explorer, explorer sport trac…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 2 | 15% |
| 2008 | 9 | 9% |
| 2007 | 25 | 31% |
| 2006 | 39 | 33% |
| 2005 | 19 | 23% |
| 2004 | 64 | 30% |
| 2003 | 42 | 28% |
| 2002 | 144 | 39% |
| 2001 | 1 | 5% |
| 2000 | 15 | 12% |
| 1999 | 8 | 5% |
| 1998 | 9 | 4% |
| 1997 | 8 | 2% |
Other parts of the 2010 Mercury Mountaineer
5 complaintsVehicle speed control
4 complaintsEngine
3 complaintsFuel system
2 complaintsSteering
2 complaintsElectrical system
1 complaintsInterior lighting
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsSeats
1 complaintsBody and structure
1 complaints
← All problems reported for the 2010 Mercury Mountaineer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology