Engine coolingPart report

1991 Mercury Topaz Engine cooling Problems

Complaints: 6about this part
Share: 15%of 40 total for the year
Median mileage: —not reported
Trend: Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the engine cooling of the 1991 Mercury Topaz, 15% of the 40 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.

“Oil leaks out of the top of the engine when first driven, causing vehicle to smoke until oil is burned out. Vehicle also dies unexpectedly when driving in hot weather. The ignition has been replaced three(3) times by consumer using rebuilt, new and manufactured parts.”

NHTSA complaint #8009258, filed 2002-05

“Vehicle would stall in traffic after stopping. Normally in the middle of an intersection. Thermostat was binding, causing it to stall. Dealer's diagnostic machine wasn't reading what problem could have been.”

NHTSA complaint #881095, filed 2001-02

Engine cooling: other model years

Year	Complaints	Share of year
1994	13	21%
1993	15	21%
1992	14	23%
1991	6	15%
1990	6	13%
1989	10	22%
1988	4	19%
1987	4	25%
1986	3	33%
1984	3	30%

Other parts of the 1991 Mercury Topaz

Electrical system
12 complaints Brakes
8 complaints Seat belts
8 complaints Fuel system
5 complaints Vehicle speed control
4 complaints Exterior lighting
1 complaints Latches, locks and linkages
1 complaints Other or unknown
1 complaints Seats
1 complaints Steering
1 complaints Body and structure
1 complaints Suspension
1 complaints

← All problems reported for the 1991 Mercury Topaz

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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