YearToAvoid

2006 Mercury Mountaineer Transmission & Powertrain Problems

NHTSA has 39 owner complaints about transmission problems in the 2006 Mercury Mountaineer, 33% of all 117 complaints for this model year. That is the highest transmission complaint count among 6 Mountaineer model years. These complaints report 2 crashes, 2 fires, and 1 injury. Median mileage at failure: 53,000 miles.

Transmission & Powertrain complaints
39
33% of 117
Crashes reported
2
Fires reported
2
Injuries reported
1
Median mileage
53,000 mi
Related recalls
0

When 2006 Mercury Mountaineer transmission complaints were filed

First complaint Jan 20, 2007, latest Apr 22, 2021.

2006 Mercury Mountaineer transmission & powertrain complaints: complaints filed per month3Jan 2007Sep 2007May 2008Dec 2008Nov 2009Oct 2011May 2013May 2016
39 complaints filed with NHTSA from Jan 2007 to Apr 2021; peak Nov 2009 (3).

Transmission & Powertrain recalls for the 2006 Mercury Mountaineer

No safety recalls on record for this model year.

Transmission & Powertrain complaints by Mountaineer model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 200519 (23%)
  2. 200639 (33%)
  3. 200725 (31%)
  4. 20089 (9%)
  5. 20090 (0%)
  6. 20102 (15%)

Frequently asked questions

Does the 2006 Mercury Mountaineer have transmission problems?
NHTSA has 39 owner complaints about the transmission in the 2006 Mercury Mountaineer, 33% of all complaints for this model year, including 2 that report a crash. Median mileage at failure is 53,000 miles.
Which Mercury Mountaineer year has the most transmission complaints?
The 2006 Mercury Mountaineer has the most transmission complaints (39), compared with 39 for the 2006.
Is there a transmission recall for the 2006 Mercury Mountaineer?
No NHTSA recall campaign for the 2006 Mercury Mountaineer is classified under transmission & powertrain. Complaints alone do not trigger a recall; check the full recall list and your VIN.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.