Total Complaints
98 filings
MERCURY COUGAR · model year
98 NHTSA complaints, 5 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1991MERCURYCOUGAR carries 98 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 5 crashes, 8 fires, 10 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1991 COUGAR is engine and engine cooling:engine with 15 filings, followed by vehicle speed control (7) and seat belts (6). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 22 investigation files overlapping the 1991 COUGAR. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
98 filings
Crashes Reported
5 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| ENGINE AND ENGINE COOLING:ENGINE | 15 |
| VEHICLE SPEED CONTROL | 7 |
| SEAT BELTS | 6 |
| EXTERIOR LIGHTING:HEADLIGHTS | 6 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS | 4 |
| ELECTRICAL SYSTEM:IGNITION:SWITCH | 4 |
| SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP | 3 |
| VISIBILITY:POWER WINDOW DEVICES AND CONTROLS | 3 |
| ENGINE AND ENGINE COOLING:ENGINE:GASOLINE | 3 |
| LATCHES/LOCKS/LINKAGES:HOOD:LATCH | 2 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:ROTOR | 2 |
| EXTERIOR LIGHTING:HEADLIGHTS:SWITCH | 2 |
| ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD | 2 |
| ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR | 2 |
| SUSPENSION:FRONT | 2 |
HEADLIGHTS GO OUT FOR VARIOUS INTERVALS AND IS PRECEDED BY FLICKERING AND/OR BLINKING WHICH CAUSES LOSS OF VISIBILITY WHICH INCREASES MY RISK OF A CRASH. ALSO NOTE A BURNING SMELL FROM VENTS WHEN THIS HAPPENS. MY VEHICLE IS A 1991 COUGAR AND I WENT ONLINE TO SEE IF THERE WAS A RECALL FOR THIS PROBLEM. NOTED RECALL FOR SAME PROBLEM ON 1992 AND 1993 MODELS NOT FOR 1991. CALLED FORD MOTOR COMPANY AND ASKED IF THERE WAS A RECALL FOR MY MODEL SINCE IT HAS THE SAME ISSUE AS 1992 AND 1993 COUGARS. WAS TOLD NO RECALL FOR THIS AND TO PAY TO GET IT FIX MYSELF. THEY WOULD REPORT PROBLEM TO PROPER DEPARTMENT. *TR
Mileage: 64,000
TL*THE CONTACT OWNS A 1991 MERCURY COUGAR. THE CONTACT SMELLED SOMETHING BURNING WHILE DRIVING 50 MPH. THE HEADLIGHTS AND INSTRUMENT PANEL LIGHTS DIMMED AND THE HEADLIGHTS BEGAN TO FLICKER. THE DEALER STATED THAT THE CIRCUIT BREAKER HAD A SHORT CIRCUIT. RECALL NUMBER 99V275000 (EXTERIOR LIGHTING:HEADLIGHTS:SWITCH) WAS FOUND. THE CURRENT AND FAILURE MILEAGES WERE 141,000.
Mileage: 141,000
THIS IS THE SECOND TIME IT HAS HAD A BLOWN HEAD GASKET. IT IS NOT FIXED YET BECAUSE I CAN'T AFFORD IT. *NM
DT: THE CONTACT STATED CAR WAS REVVING WHEN STARTING IT UP. WHEN PUTTING IT IN DRIVE IN WENT DOWN SOMEWHAT. IT FELT LIKE IT WAS GOING TO TAKE OFF BY ITSELF. THIS HAPPENED ON 8-31-05. BACK IN 1998 THE CONTACT WAS HAVING THE SAME PROBLEM. SHE TOOK IT TO A DEALER, AND THEY REPLACED A CHIP THAT HAD BROKEN UNDER THE HOOD. SHE FELT THIS WAS SAME PROBLEM THAT SHE EXPERIENCED IN 1998. THE CONTACT WAS PLANNING TO TAKE VEHICLE TO A DEALER CLOSE TO HER AS SOON AS POSSIBLE. SHE WAS NOT GOING TO DRIVE THE CAR BECAUSE SHE WAS AFRAID. SHE WILL HAVE IT TOWED.*AK UPDATED 11/2/2005 - *NM
Mileage: 95,000
WHILE DRIVING 60 MPH, THE ANTI LOCK BRAKING SYSTEM FAILED. AS A RESULT, WHEN APPLYING THE BRAKES THE PEDAL WENT TO THE FLOOR. *AK THE VEHICLE HAD BEEN MAKING NOISES SINCE IT WAS NEW. THE CONSUMER THOUGHT IT WAS NORMAL. THE CONSUMER WAS UNABLE TO FIND THE PARTS. *SC *JB
Mileage: 78,000
THE CAR STARTS AND RUNS WELL. BUT EVER SO OFTEN WITHOUT ANY WARNING THE ENGINE WILL STALL, AND THEN IT WILL CRANK RIGHT UP. LUCKY FOR ME IT HASN'T STALLED WHILE I WAS MAKING A LEFT TURN WITH A SEMI BARRELING DOWN ON ME.
Mileage: 95,000
THE CAR STARTS AND RUNS WELL. BUT EVER SO OFTEN WITHOUT ANY WARNING THE ENGINE WILL STALL, AND THEN IT WILL CRANK RIGHT UP. LUCKY FOR ME IT HASN'T STALLED WHILE I WAS MAKING A LEFT TURN WITH A SEMI BARRELING DOWN ON ME.
Mileage: 95,000
VEHICLE WAS ACTING SLUGGISH AND WHITE MOKE CAME FORM TAILPIPE. VEHICLE WAS GOING 35MPH AND OVERHEATED, CAUSING DRIVER TO PULL OVER. CONSUMER INDICATED THAT CONTINUING TO DRIVE WILL CAUSE HEAD TO WARP. DEALER WAS NOTIFIED. *AK *TT
CONSUMER COMPLAINS OF HEAD GASKET FAILURE. *JG
CONSUMER COMPLAINS OF HEAD GASKET FAILURE. *JG
WHILE DRIVING 15-20 MPH VEHICLE BEGAN TO OVERHEAT, CONSUMER PULLED INTO SERVICE STATION TO HAVE VEHICLE INSPECTED, THE SERVICE MECHANIC STATED THAT THE HEAD GASKETS HAD BLOWN. DEALER HAS YET TO BE CONTATCED. PLEASE PROVIDE FURTHER DETAILS. *AK
HEADLIGHTS GO OFF WHILE DRIVING, BRAKES CONTINUE TO MAKE NOISE, KEY SWITCH PROB. RECALL REPAIR, HEATER BLOWS COLD, CAR DIED AFTER EXCEL. RESTARTED AND DROVE 50 FT. DIED AGAIN AND KNOW IN SHOP & BEEN TOLD GASKETS OR BUSTED HEAD. I LOVE THIS CAR AND HAVE TAKEN EXTRA CARE, ENGINE AND CAR KEEP SPOTLESS, CAR IS NEVER LEFT OUTSIDE. ALL TOOK PLACE WITHIN 1 MO. IS IT ALL TIED TOGETHER WITH ONE THING? *AK
AIR BAG DID NOT DEPLOY UPON A LEFT TURN 45 DEGREE CONTACT TO LEFT FRONT. *AK
NO SUMMARY LISTED FOR ABOVE VEHICLE. *AK
WHILE DRIVING WOULD STEP ON THE BRAKE PEDAL, BUT VEHICLE WILL NOT STOP. ALSO, PEDAL FELT HARD. *AK
WHEN CONSUMER TOOK VEHICLE TO DEALER FOR CHECK UP,TECHNICIAN FOUND THAT ENGINE HAD A BLOWN HEAD GASKET WICH HAPPENED WITHOUT A WARNING. *AK
ENGINE HEAD GAKSET NEEDED TO BE REPAIRED AT 60,000 MILES. THE FORD DEALER "SHAVED" THE GASKET. THE HEAD GASKET IS NOW SHOT AT 98,000 MILES. I HAVE CONTACTED FORD VIA THE INTERNET AND PHONE BUT HAVE HAD NO SUCCESS. FORD HAS ADMITTED TO A DEFECT IN THIS SAME ENGINE IN THE 1994-95 TAURUSES, SABLES, CONTINENTALS, COUGARS, THUNDERBIRDS, MUSTANGS AND WINDSTARS AND OFFERED REIMBURSEMENT AND/OR MONEY TOWARDS A NEW VEHICLE (SEE APRIL 26, 2000 EDITION OF DETROIT NEWS AUTO SECTION - WWW.DETNEWS.COM). *AK
THE HEAD GASKET WENT BAD EVEN AFTER ROUTINE REGULAR MAINTENANCE AND ONLY 80,000 MILES ON THE VEHICLE. ACCORDING TO A LOCAL DEALERSHIP AND SEVERAL MECHANICS THIS IS EXTREMELY COMMON. I WAS FORTUNATE BECAUSE THE HEADS AND BLOCK WERE NOT CRACKED UNLIKE THE MAJORITY OF THE ONES THAT ARE SERVICED. IT SEEMS THAT IF THE 3.8 LITER HAS THIS PROBLEM THEN MAYBE THERE IS A DESIGN FLAW OR QUALITY PROBLEM WITH THE GASKET. THE OTHER PROBLEM IS WHEN HAVING THIS FIXED, THE STEERING PUMP FRONT GASKET USUALLY BREAKS WHEN THE BELT IS REMOVED, THIS SHOULD NOT HAPPEN. IF I HAD KNOWN ABOUT THIS DESIGN FLAW IN THIS ENGINE I WOULD HAVE NEVER PURCHASED THIS OR ANY FORD VEHICLES WITH A 3.8 LITER ENGINE. ALSO WHY DON'T THE SEAT BELTS LOCK? *AK
THE HEAD GASKET WENT BAD EVEN AFTER ROUTINE REGULAR MAINTENANCE AND ONLY 80,000 MILES ON THE VEHICLE. ACCORDING TO A LOCAL DEALERSHIP AND SEVERAL MECHANICS THIS IS EXTREMELY COMMON. I WAS FORTUNATE BECAUSE THE HEADS AND BLOCK WERE NOT CRACKED UNLIKE THE MAJORITY OF THE ONES THAT ARE SERVICED. IT SEEMS THAT IF THE 3.8 LITER HAS THIS PROBLEM THEN MAYBE THERE IS A DESIGN FLAW OR QUALITY PROBLEM WITH THE GASKET. THE OTHER PROBLEM IS WHEN HAVING THIS FIXED, THE STEERING PUMP FRONT GASKET USUALLY BREAKS WHEN THE BELT IS REMOVED, THIS SHOULD NOT HAPPEN. IF I HAD KNOWN ABOUT THIS DESIGN FLAW IN THIS ENGINE I WOULD HAVE NEVER PURCHASED THIS OR ANY FORD VEHICLES WITH A 3.8 LITER ENGINE. ALSO WHY DON'T THE SEAT BELTS LOCK? *AK
NO SUMMARY LISTED FOR ABOVE VEHICLE. *AK
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.