Problems · NHTSA complaints
1999 Mercury Mystique problems
Owners filed 137 complaints about the 1999 Mercury Mystique with NHTSA between Mar 1999 and Oct 2012. The most-cited component is structure (29).
Complaints
137
Filed with NHTSA
Crashes
17
Reported by owners
Fires
1
Reported by owners
Injuries
17
People reported injured
Deaths
1
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Structure29
- Service brakes, hydraulic20
- Visibility17
- Engine and engine cooling15
- Electrical system14
- Air bags8
- Equipment7
- Fuel system, gasoline6
- Suspension6
- Vehicle speed control6
- Steering5
- Seat belts4
- Power train4
- Exterior lighting2
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 6, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
11
15
14
10
18
24
17
9
9
5
3
0
1
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 1999 | 11 |
| 2000 | 15 |
| 2001 | 14 |
| 2002 | 10 |
| 2003 | 18 |
| 2004 | 24 |
| 2005 | 17 |
| 2006 | 9 |
| 2007 | 9 |
| 2008 | 5 |
| 2009 | 3 |
| 2010 | 0 |
| 2011 | 1 |
| 2012 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Structure
29 reports1 crash
“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. *TR”
Service brakes, hydraulic
20 reports4 crashes2 related recalls
“TL*THE CONTACT OWNS A 1999 MERCURY MYSTIQUE. THE BRAKE PEDAL EXTENDED TO THE FLOOR WHEN IT WAS DEPRESSED. THE CONTACT ATTEMPTED TO EXIT THE DRIVEWAY AT 2 MPH, BUT THE VEHICLE FAILED TO STOP. SHE HAD TO CONTINUOUSLY APPLY PRESSURE TO THE BRAKE PEDAL IN ORDER FOR THE VEHICLE TO STOP. SHE INSPECTED THE VEHICLE AND NOTICED BRAKE FLUID LEAKING FROM UNDERNEATH. SHE ALSO NOTICED THAT THE BRAKE LINE AND CHASSIS WERE EXCESSIVELY RUSTED. THE DEALER STATED THAT BECAUSE THERE WAS NO RECALL, THEY WOULD NOT ASSUME ANY FINANCIAL RESPONSIBILITY FOR THE REPAIR. THE VEHICLE HAS NOT BEEN REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 206,000. UPDATED 09/10/08. *LJ UPDATED 09/12/08. *JB”
Visibility
17 reports
“MY 1999 MERCURY MYSTIQUES DASH BOARD HAS COMPLETELY WARPED. IT HAS RENDERED THE DEFROSTER USELESS. I WAS NOT INFORMED OF ANY RECALL FOR THE DEFECT. I NOW UNDERSTAND THAT THE LINCOLN/MERCURY COMPANY DID ACKNOWLEDGE A DEFECT IN THE DASHBOARDS. WHAT REMEDY CAN I EXPECT ? *TR”
Engine and engine cooling
15 reports1 fire
“MY HUSBAND AND I WAS DRIVING IN TRAFFIC FROM AN APPOINTMENT AND ALL OF A SUDDEN THE CAR STARTS SMOKING WITHIN A QUICK SECOND THE FRONT LEFT SIDE BURST INTO FLAMES, ELECTRICAL WINDOWS WOULDN'T WORK AND THE BRAKES FAILED, THE WE HAD TO RIDE TRAFFIC UNTIL WE COULD MOVE OVER TO THE CURVE AT THIS TIME THE EMERGENCY BRAKE HAD TO BE USED IN ORDER TO STOP THE CAR AND I HAD TO MOVE MYSELF OUT ON THE DRIVERS SIDE. *TR”
Electrical system
14 reports1 fire1 related recall
“I HAVE HAD A SHUTDOWN OF THE HEATER/AC FAN DUE TO MELTING OF THE WIRING HARNESS DESCRIBED BELOW. I REPLACED IT ONCE A COUPLE YEARS AGO AND IT JUST FRIED AGAIN. I WAS UNAWARE OF AN IDENTIFIED PROBLEM PRIOR TO THIS UNTIL I SAW THIS NO THE INTERNET. I LIVE IN THE DESERT AND IS CURRENTLY TRIPLE DIGIT TEMPERATURES AND IS IMPERATIVE I GET THIS FIXED. I CHECKED MY VIN NUMBER AND IT IS NOT INCLUDED ON THE RECALL LIST BUT FROM THE PRIOR EXPERIENCE I HAVE HAD WITH THIS PROBLEM IN MY CAR, I FEEL IT SHOULD BE ADDRESSED. CAN YOU HELP ME? SYMPTOMS> COMPLETE SHUTDOWN OF A/C, HEATING. FAN SYSTEM AND AN ODOR OF SOMETHING BURNED. LAST TIME THE HARNESS WAS FRIED AND THE HARNESS WAS REPLACED (BUT I DID NOT KNOW OF THIS PARTICULAR ISSUE THEN) BUT THE HEATER BLOWER RESISTER WAS NOT REPLACED. CAMPAIGN NUMBER: 01V230000 DATE: 2001-JUL-09 COMPONENT: ELECTRICAL SYSTEM DEFECT SUMMARY: ON CERTAIN MY 1996-1998 PASSENGER VEHICLES BUILT AT THE KANSAS CITY, CUAUTITLAN ASSEMBLY PLANTS OR ON MY 1999 PASSENGER VEHICLES BUILT AT THE AUTOMOTIVE ALLIANCE INTERNATIONAL ASSEMBLY PLANTS, THE ROUGH SURFACE OF THE HEATER BLOWER RESISTOR'S STAINLESS STEEL BLADES CAN DAMAGE THE COPPER SURFACE OF THE…”
Air bags
8 reports7 crashes
“A MINI VAN BROADSIDED A 4 DOOR SEDAN AND THE AIRBAGS DID NOT DEPLOY UNTILL AFTER THE VAN CAME TO A STOP, AND THE DRIVER TRIED TO OPEN DRIVER'S SIDE DOOR TO GET OUT. *AK”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 6, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.