YearToAvoid

2005 Mercury Grand Marquis Engine Problems

NHTSA has 47 owner complaints about engine problems in the 2005 Mercury Grand Marquis, 10% of all 488 complaints for this model year. That is the highest engine complaint count among 7 Grand Marquis model years. These complaints report 14 crashes, 3 fires, and 12 injuries. Median mileage at failure: 19,097 miles.

Engine complaints
47
10% of 488
Crashes reported
14
Fires reported
3
Injuries reported
12
Median mileage
19,097 mi
Related recalls
0

When 2005 Mercury Grand Marquis engine complaints were filed

First complaint Jul 22, 2005, latest Mar 24, 2025.

2005 Mercury Grand Marquis engine complaints: complaints filed per month4Jul 2005Apr 2006Jan 2008Aug 2011Aug 2012Nov 2015Mar 2018Mar 2025
47 complaints filed with NHTSA from Jul 2005 to Mar 2025; peak Dec 2005 (4).

Engine recalls for the 2005 Mercury Grand Marquis

No safety recalls on record for this model year.

Engine complaints by Grand Marquis model year

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

  1. 200547 (10%)
  2. 200645 (31%)
  3. 200720 (21%)
  4. 200822 (28%)
  5. 20096 (23%)
  6. 20105 (21%)
  7. 20110 (0%)

Frequently asked questions

Does the 2005 Mercury Grand Marquis have engine problems?
NHTSA has 47 owner complaints about the engine in the 2005 Mercury Grand Marquis, 10% of all complaints for this model year, including 14 that report a crash. Median mileage at failure is 19,097 miles.
Which Mercury Grand Marquis year has the most engine complaints?
The 2005 Mercury Grand Marquis has the most engine complaints (47), compared with 47 for the 2005.
Is there a engine recall for the 2005 Mercury Grand Marquis?
No NHTSA recall campaign for the 2005 Mercury Grand Marquis 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.