YearToAvoid

2005 Mercury Montego Engine Problems

NHTSA has 35 owner complaints about engine problems in the 2005 Mercury Montego, 26% of all 135 complaints for this model year. That is the highest engine complaint count among 3 Montego model years. These complaints report 2 crashes. Median mileage at failure: 88,000 miles.

Engine complaints
35
26% of 135
Crashes reported
2
Fires reported
0
Injuries reported
0
Median mileage
88,000 mi
Related recalls
0

When 2005 Mercury Montego engine complaints were filed

First complaint Aug 19, 2005, latest Aug 7, 2020.

2005 Mercury Montego engine complaints: complaints filed per month3Aug 2005Apr 2010Jul 2011Sep 2012Jan 2014Apr 2016Apr 2018
35 complaints filed with NHTSA from Aug 2005 to Aug 2020; peak Jun 2011 (3).

Engine recalls for the 2005 Mercury Montego

No safety recalls on record for this model year.

Engine complaints by Montego model year

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

  1. 200535 (26%)
  2. 200635 (41%)
  3. 200714 (39%)

Frequently asked questions

Does the 2005 Mercury Montego have engine problems?
NHTSA has 35 owner complaints about the engine in the 2005 Mercury Montego, 26% of all complaints for this model year, including 2 that report a crash. Median mileage at failure is 88,000 miles.
Which Mercury Montego year has the most engine complaints?
The 2005 Mercury Montego has the most engine complaints (35), compared with 35 for the 2005.
Is there a engine recall for the 2005 Mercury Montego?
No NHTSA recall campaign for the 2005 Mercury Montego 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.