2007 Mercury Mountaineer Transmission and drivetrain Problems
- Complaints
- 25about this part
- Share
- 31%of 81 total for the year
- Median mileage
- 74,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 25 complaints about the transmission and drivetrain of the 2007 Mercury Mountaineer, 31% of the 81 complaints for this model year. Where a mileage was given, the median is 74,000 miles. 3 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I had to replace the transmission and some other related parts in my vehicle and I was informed by a dealership that there was a silent recall on this transmission and that even though ford motor company was aware of the issues as early as 2000 they continue to install them in vehicles. If you look online you will see quite a number of complaints on this transmission. …”
NHTSA complaint #11270823, filed 2019-10, 130,000 miles“While driving my seat will randomly move back and forth as if I took the keys out. Thought something was wrong with my transmission but after having the garage put transmission fluid in it still feels like the transmission is messed up even though the garage says the transmission is fine.”
NHTSA complaint #11083828, filed 2018-04, 150,000 miles“My 2007 Mercury Mountaineer never had any problems until recently, thought it was the transmission because of the way it drove. Took it to the mechanic and got transmission fluid put in but the problems remained the same and was told the transmission was fine. My thermostat housing unit was leaking (this is very common with these cars and very dangerous, needs immediate attention!) and had caused very expensive wiring issues. …”
NHTSA complaint #11043298, filed 2017-11, 130,000 miles“Vehicle will not shift out of park. Shift is locked into park and will not shift to any gear and depressing lever button and brake will not release out of park. I purchased the vehicle from huntington ford in rochester hill and bought the extended warranty and was told by fords service department this is not covered and would cost $500.00 just for the part. After researching this problem I have noticed other complaints about this issue that the car will not move out of park. …”
NHTSA complaint #10608724, filed 2014-07, 97,400 miles“Transmission jukes ahead while traveling on long distances and short. When I let off of brake pedal it lounges forward. It has gotten worse in 2months time. I brought it to the dealer which in turn told me I must wait for a recall per ford motor co. I feel this is nonsense being this matter is getting worse!!! What, I have to wait for my vehicle to die before I can get something done about it?!!! Bullcrap! Thanks teresa”
NHTSA complaint #10208534, filed 2007-11, 7,800 milesRelated service bulletins
- 10243490Sep 7, 2023When performing any transmission fluid changes or topoffs involving MERCON SP, MERCON LV has replaced all versions of MERCON SP and can be used going forward. Mixing MERCON LV…
- 10029205Jun 1, 2009Ford/mercury/lincoln: vehicles may exhibit one or more of the following symptoms: drive away hesitation, loss of rpm on deceleration, difficulty starting, and/or idle rpm less…
- 10028736May 1, 2009Ford: some vehicles may exhibit oil separation from the internal lube found in the unitized cartridge seal. Oil separation appears to be and is often misdiagnosed, as an axle…
- 10026385Oct 23, 2008Ford/mercury: 4.0l/4.6l hard start/rough running; after long hot soak/dip in rpm when coming to a stop; built on or before 4/2/08. May exhibit a dip in rpm below normal idle…
- 10024695Feb 1, 2008Multiple vehicle lines - intermittent pcm, fuel pump, ign. Coil, a/c, abs or fog lamp operation.
- 10032229Oct 1, 2007Ford/mercury: some vehicles equipped with 6r60 transmissions may exhibit various transmission performance issues. When compared to other transmissions, some of the shift…
- 10023295Jul 1, 2007Multiple vehicle lines - intermittent pcm, fuel pump, ign, coil, a/c, abs or fog lamp operation.
- 10021040Feb 26, 2007Calibration update 4.0l - various symptoms - surge, hesitation, torque converter cycling, no up shift after forced downshift, and poor a/c performance.
- 10021279Feb 1, 2007Overheat indication and shift quality improvements - calibration update release - 4.6l 3v with 6r60 transmission equipped vehicles only.
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 2007 Mercury Mountaineer
26 complaintsElectrical system
16 complaintsVehicle speed control
7 complaintsOther or unknown
6 complaintsEngine
5 complaintsSteering
5 complaintsBody and structure
5 complaintsEngine cooling
4 complaintsSeat belts
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsWheels
3 complaintsExterior lighting
2 complaints
← All problems reported for the 2007 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