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Vehicle speed controlPart report

1985 Mercury Grand Marquis Vehicle speed control Problems

Complaints
4about this part
Share
19%of 21 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 1985 Mercury Grand Marquis, 19% of the 21 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.

“Vehicle has low power, stalls, always on high idle when started, transmission jerks, checked with dealer and they have no information on recalls although your data base shows numerous recalls concerning these problems. I purchased this vehicle from my father. He has never received a notice of any of the recalls. How can I go about getting these vehicle problems corrected?”

NHTSA complaint #759772, filed 2002-03

Vehicle speed control: other model years

YearComplaintsShare of year
2010312%
2009415%
20081519%
20071314%
20063726%
2005398%
2004237%
2003277%
20021722%
20012717%
2000138%
1999127%
199896%
1997248%
1996198%
19952313%
19943321%
19931913%
19923112%
19911215%
1990916%
19891424%
19881216%
1987716%
198615%
1985419%
1984427%
1983114%

Other parts of the 1985 Mercury Grand Marquis

Electrical system
11 complaints
Engine cooling
3 complaints
Equipment
2 complaints
Fuel system
2 complaints
Engine
1 complaints
Body and structure
1 complaints
Tires
1 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 1985 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