1991 Mercury Grand Marquis Other or unknown Problems
- Complaints
- 3about this part
- Share
- 4%of 82 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the other or unknown of the 1991 Mercury Grand Marquis, 4% of the 82 complaints for this model year.
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.
“Power window on the passenger side does not go down at all.the car keeps killing the battery and I've already spent money on an alternator used. Brake pedal seems stiff at times and does not grab well at times. Air bag light has been blinking ever since I bought car because of air bag failure. It was disconnected by the garage that the owner before me had bought it from.”
NHTSA complaint #10070780, filed 2004-01“The vehicle had been through 3 transmissions, a water pump, brakes, muffler, tailpipe, shocks and electrical door latches. The engine check light comes on intermittently. .et.”
NHTSA complaint #833324, filed 1999-01Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 1 | 4% |
| 2008 | 3 | 4% |
| 2007 | 1 | 1% |
| 2006 | 5 | 4% |
| 2005 | 10 | 2% |
| 2004 | 2 | 1% |
| 2003 | 6 | 2% |
| 2002 | 2 | 3% |
| 2001 | 3 | 2% |
| 2000 | 6 | 4% |
| 1999 | 2 | 1% |
| 1998 | 2 | 1% |
| 1997 | 5 | 2% |
| 1996 | 3 | 1% |
| 1995 | 6 | 3% |
| 1994 | 5 | 3% |
| 1992 | 7 | 3% |
| 1991 | 3 | 4% |
| 1990 | 2 | 4% |
| 1984 | 2 | 13% |
Other parts of the 1991 Mercury Grand Marquis
21 complaintsBrakes
13 complaintsVehicle speed control
12 complaintsAir bags
11 complaintsEngine cooling
10 complaintsTransmission and drivetrain
8 complaintsFuel system
4 complaintsBody and structure
4 complaintsExterior lighting
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsLatches, locks and linkages
2 complaintsSuspension
2 complaints
← All problems reported for the 1991 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