1984 Mercury Grand Marquis Vehicle speed control Problems
- Complaints
- 4about this part
- Share
- 27%of 15 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the vehicle speed control of the 1984 Mercury Grand Marquis, 27% of the 15 complaints for this model year. 2 of these say a crash was involved, according to the filers.
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.
“Consumer had the vehicle in park, then put the vehicle in drive, and the vehicle just took off, causing the consumer to run in a yard and went down an enbankment and hit a tree. The insurance company claim that the throttle got stuck.”
NHTSA complaint #829142, filed 1998-10Vehicle speed control: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 3 | 12% |
| 2009 | 4 | 15% |
| 2008 | 15 | 19% |
| 2007 | 13 | 14% |
| 2006 | 37 | 26% |
| 2005 | 39 | 8% |
| 2004 | 23 | 7% |
| 2003 | 27 | 7% |
| 2002 | 17 | 22% |
| 2001 | 27 | 17% |
| 2000 | 13 | 8% |
| 1999 | 12 | 7% |
| 1998 | 9 | 6% |
| 1997 | 24 | 8% |
| 1996 | 19 | 8% |
| 1995 | 23 | 13% |
| 1994 | 33 | 21% |
| 1993 | 19 | 13% |
| 1992 | 31 | 12% |
| 1991 | 12 | 15% |
| 1990 | 9 | 16% |
| 1989 | 14 | 24% |
| 1988 | 12 | 16% |
| 1987 | 7 | 16% |
| 1986 | 1 | 5% |
| 1985 | 4 | 19% |
| 1984 | 4 | 27% |
| 1983 | 1 | 14% |
Other parts of the 1984 Mercury Grand Marquis
5 complaintsEngine cooling
5 complaintsFuel system
2 complaintsOther or unknown
2 complaintsBody and structure
2 complaintsSuspension
1 complaints
← All problems reported for the 1984 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