YearToAvoid

2006 Mercury Mountaineer Engine Problems

NHTSA has 59 owner complaints about engine problems in the 2006 Mercury Mountaineer, 50% of all 117 complaints for this model year. That is the highest engine complaint count among 6 Mountaineer model years. These complaints report 1 fire and 1 injury. Median mileage at failure: 57,650 miles.

Engine complaints
59
50% of 117
Crashes reported
0
Fires reported
1
Injuries reported
1
Median mileage
57,650 mi
Related recalls
0

When 2006 Mercury Mountaineer engine complaints were filed

First complaint Oct 25, 2007, latest Dec 27, 2022.

2006 Mercury Mountaineer engine complaints: complaints filed per month5Oct 2007Dec 2009Jul 2010Apr 2011Jan 2012Oct 2012Jan 2014Nov 2015
59 complaints filed with NHTSA from Oct 2007 to Dec 2022; peak Jan 2011 (5).

Engine recalls for the 2006 Mercury Mountaineer

No safety recalls on record for this model year.

Engine complaints by Mountaineer model year

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

  1. 200522 (27%)
  2. 200659 (50%)
  3. 200716 (20%)
  4. 200811 (11%)
  5. 20091 (17%)
  6. 20106 (46%)

Frequently asked questions

Does the 2006 Mercury Mountaineer have engine problems?
NHTSA has 59 owner complaints about the engine in the 2006 Mercury Mountaineer, 50% of all complaints for this model year. Median mileage at failure is 57,650 miles.
Which Mercury Mountaineer year has the most engine complaints?
The 2006 Mercury Mountaineer has the most engine complaints (59), compared with 59 for the 2006.
Is there a engine recall for the 2006 Mercury Mountaineer?
No NHTSA recall campaign for the 2006 Mercury Mountaineer is classified under engine. 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.