2002 Mercury Grand Marquis Engine Problems
- Complaints
- 2about this part
- Share
- 3%of 78 total for the year
- Median mileage
- 58,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2002 Mercury Grand Marquis, 3% of the 78 complaints for this model year. Where a mileage was given, the median is 58,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2002 Mercury Grand Marquis. The contact stated while driving 50 MPH at night, the cruise control mode malfunctioned, and the speed of the vehicle increased independently. The contact stated that the brake pedal was depressed several times to the floor, but the vehicle failed to stop. The contact turned off the vehicle, and the vehicle came to a stop. The vehicle was towed to the contact's residence. The contact stated that he was afraid of driving the vehicle again. …”
NHTSA complaint #11674238, filed 2025-07, 58,000 miles“The contact owns a 2002 Mercury Grand Marquis. The contact stated that there was a premature failure in which there was an internal crack on the intake manifold, which caused water intrusion that affected other components. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was not available.”
NHTSA complaint #10946464, filed 2017-01Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 1 | 4% |
| 2009 | 2 | 8% |
| 2008 | 4 | 5% |
| 2007 | 4 | 4% |
| 2006 | 8 | 6% |
| 2005 | 5 | 1% |
| 2004 | 4 | 1% |
| 2003 | 5 | 1% |
| 2002 | 2 | 3% |
| 2001 | 9 | 6% |
| 2000 | 8 | 5% |
| 1999 | 7 | 4% |
| 1998 | 3 | 2% |
| 1997 | 2 | 1% |
| 1996 | 1 | 0% |
| 1994 | 1 | 1% |
| 1990 | 1 | 2% |
| 1985 | 1 | 5% |
Other parts of the 2002 Mercury Grand Marquis
17 complaintsSuspension
11 complaintsElectrical system
10 complaintsEngine cooling
10 complaintsSteering
9 complaintsSeat belts
7 complaintsTires
7 complaintsBrakes
6 complaintsExterior lighting
6 complaintsFuel system
4 complaintsAir bags
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaints
← All problems reported for the 2002 Mercury Grand Marquis
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology