2000 Mercury Mountaineer Transmission and drivetrain Problems
- Complaints
- 15about this part
- Share
- 12%of 123 total for the year
- Median mileage
- 59,976miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 15 complaints about the transmission and drivetrain of the 2000 Mercury Mountaineer, 12% of the 123 complaints for this model year. Where a mileage was given, the median is 59,976 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have a 2000 Mercury Mountaineer that started having transmission problems at 70k miles. It has an aod transmission and it wouldn't shift into gear when I would hit the gas to drive. I took it into the dealer I bought the SUV from and they told me that I was low on transmission fluid and that was the problem so I had them fill the fluid. Almost immediately it started going through fluid and at around 85k miles it slowly started having the shifting problems again. Now it hardly shift at all. …”
NHTSA complaint #10410296, filed 2011-07, 70,000 miles“2000 Mercury Mountaineer transmission failure vehicle has only 64,000 miles, transmission has been power flushed by our local ford dealership with no correction, we were told the problem was shift flare, with the o/d light flashing is common with all 5r55e transmissions with 4.0l v6 engines. We were told it would be best to replace the transmission with a factory remanufactured unit, rather than try to repair the old transmission at a cost of $2500.00 to $3000.00 dollars. We are now to a point where we cannot drive the vehicle any great distance other than right around town. …”
NHTSA complaint #10302016, filed 2010-01, 59,976 miles“The o/d light keeps flashing and it doesn't shift into gear when pulling out in front of oncoming traffic its vary dangerous for myself and other drivers please address this on going problem with this transmission”
NHTSA complaint #11287826, filed 2019-12, 160,538 miles“Consumer noticed an extreme amount of fluid in the driveway which did not appear to be oil. After taking the vehicle to the dealer it was discovered that head gasket blew out. Consumer had the repairs done. Less than two months later, while driving , the gears would not connect properly. Consumer had to have the transmission replaced.”
NHTSA complaint #10115335, filed 2005-03, 58,000 miles“While driving at low speeds, the vehicle down shifted to low range. The 4wd and overdrive lights where flashing and whining along with an alarm sound coming from the dash. The engine was shut off and the key was removed, but the whining sound continued. The consumer disconnected the battery and the noise stopped.”
NHTSA complaint #10071723, filed 2004-06, 57,000 milesRelated service bulletins
- 10017891Apr 1, 2005Front axle leaks fluid from vent tube - vehicles equipped with 4x4 or awd.
- 10014086Dec 13, 2004General (pcm) power train control module programming procedures.
- 10013369Nov 1, 2004General power train control module (pcm) programming procedures.
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 2000 Mercury Mountaineer
28 complaintsTires
22 complaintsElectrical system
19 complaintsAir bags
9 complaintsBrakes
8 complaintsSeats
7 complaintsEquipment
6 complaintsBody and structure
6 complaintsSuspension
6 complaintsEngine cooling
5 complaintsSteering
5 complaintsEngine
4 complaints
← All problems reported for the 2000 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