YearToAvoid

2005 Mercury Mariner Engine Problems

NHTSA has 24 owner complaints about engine problems in the 2005 Mercury Mariner, 36% of all 67 complaints for this model year. That is #5 highest engine complaint count among 7 Mariner model years. These complaints report 1 crash. Median mileage at failure: 61,000 miles.

Engine complaints
24
36% of 67
Crashes reported
1
Fires reported
0
Injuries reported
0
Median mileage
61,000 mi
Related recalls
0

When 2005 Mercury Mariner engine complaints were filed

First complaint Oct 16, 2006, latest Apr 29, 2019.

2005 Mercury Mariner engine complaints: complaints filed per month1Oct 2006Jan 2008Dec 2008Mar 2010Sep 2012Mar 2014Dec 2015May 2017
24 complaints filed with NHTSA from Oct 2006 to Apr 2019; peak Oct 2006 (1).

Engine recalls for the 2005 Mercury Mariner

No safety recalls on record for this model year.

Engine complaints by Mariner model year

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

  1. 200524 (36%)
  2. 200621 (33%)
  3. 200712 (36%)
  4. 200846 (10%)
  5. 200984 (27%)
  6. 2010104 (39%)
  7. 201128 (32%)

Frequently asked questions

Does the 2005 Mercury Mariner have engine problems?
NHTSA has 24 owner complaints about the engine in the 2005 Mercury Mariner, 36% of all complaints for this model year, including 1 that report a crash. Median mileage at failure is 61,000 miles.
Which Mercury Mariner year has the most engine complaints?
The 2010 Mercury Mariner has the most engine complaints (104), compared with 24 for the 2005.
Is there a engine recall for the 2005 Mercury Mariner?
No NHTSA recall campaign for the 2005 Mercury Mariner 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.