1999 Mercury Mystique Engine Problems
- Complaints
- 1about this part
- Share
- 1%of 128 total for the year
- Median mileage
- 125,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 1999 Mercury Mystique, 1% of the 128 complaints for this model year. Where a mileage was given, the median is 125,000 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.
“I was driving along when I could smell my car getting hot, so I pulled over and sure enough it was overheating, but did not show inside on the dashboard, so I had it checked and the plastic housing around the thermostat was cracked in 3 places, so I say fix it ,they said it would be 450.00, ok no problem, then they called back and said that the housing was welded to the manifold and that I would have to replace all for 1200.00 and that the housing wasn't made of plastic anymore because of this problem. I think this should be a recall and fixed for free.”
NHTSA complaint #10479223, filed 2012-10, 125,000 milesEngine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 1999 | 1 | 1% |
Other parts of the 1999 Mercury Mystique
28 complaintsBrakes
21 complaintsOther or unknown
19 complaintsEngine cooling
15 complaintsElectrical system
14 complaintsVisibility (wipers, defrost, mirrors)
14 complaintsFuel system
7 complaintsAir bags
6 complaintsEquipment
6 complaintsSuspension
6 complaintsSteering
5 complaintsVehicle speed control
5 complaints
← All problems reported for the 1999 Mercury Mystique
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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