Reliability, what owners report, and what it costs to keep.
AVOIR's read: the numbers are mixed and the complaint record is worth reading before you commit.
Owners have filed 521 complaints with NHTSA about the 1999 Mercury Cougar, and it carries 9 recalls. These are owner allegations rather than confirmed defects, but the pattern of what people complain about is the most useful signal a used buyer has.
| Area | Complaints | Share |
|---|---|---|
| Electrical system | 52 | 10% |
| Service brakes | 50 | 10% |
| Visibility | 44 | 8% |
| Engine and engine cooling | 36 | 7% |
| Fuel system | 29 | 6% |
| Power train | 28 | 5% |
| Structure | 24 | 5% |
| Tires | 24 | 5% |
| Vehicle speed control | 20 | 4% |
| Air bags | 19 | 4% |
Verbatim from NHTSA complaint records, trimmed for length.
YES, I PURCHASED MY VEHICLE IN JULY OF 2017. WHEN I TEST DROVE THE VEHICLE, EVERYTHING SEEMED PERFECTLY FINE. YET, THE DAY I RECEIVED IT, I WENT TO THE GAS STATION TO FILL UP. UPON RETURNING HOME, 1 MILE., THE ENGINE LIG
NHTSA complaint: Fuel/propulsion system
I GOT IN MY CAR ONE DAY AFTER WORK IN THE PARKING LOT AND STARTED MY CAR AND MY AIRBAG LIGHT WAS ON. IT STAYED ON FOR THREE DAYS AND IS NO LONGER ON. IT SEEMS LIKE NO ONE WANTS TO TAKE ACCOUNT OR PROVIDE SOLUTIONS FOR TH
NHTSA complaint: Electrical system
TRANSMISSION HAVING PROBLEMS GOING INTO GEAR CONSTANTLY SLIPPING AND CATCHING GEARS WHEN TRYING TO DRIVE ONLY GETS UP TO 30 MPH
NHTSA complaint: Power train
I HAVE PROBLEM WITH TRANSMMITION SHIFTING 1ST TO SECOND CHANGES AT 3000RPM BUT WHEN I CHANGE PARK TO DRIVE SHAKES MOTOR BAD , ONE OF THE WIRES START SMOKING I LIKE I PUT TAPE AROUND WIRED BURND. TEMPERATURE IT DOESN'
NHTSA complaint: Electrical system
TL* THE CONTACT OWNS A 1999 MERCURY COUGAR. WHILE DRIVING APPROXIMATELY 5 MPH APPROACHING A STOP, THE VEHICLE IDLED AND STALLED WITHOUT WARNING. IN ADDITION, THE SPEEDOMETER FLUCTUATED. THE FAILURE RECURRED, ESPECIALLY W
NHTSA complaint: Engine
TL* THE CONTACT OWNS A 1999 MERCURY COUGAR. THE CONTACT STATED THAT WHILE DRIVING AT 35 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT ALSO STATED THAT WHILE ATTEMPTING TO START THE VEHICLE, THE VEHICLE FAILED TO
NHTSA complaint: Electrical system
1999 COUGAR BATTERY CONNECTION PROBLEMS OR SOMETHING FAULTY. SOMETIMES WHILE I'M DRIVING MY CAR JUST GOES DEAD. IT'S DONE THAT A LOT LATELY. I NOW HAVE A NEW BATTERY BUT THE SAME THING HAPPENS AND I'M SCARED WHEN IT H
NHTSA complaint: Electrical system
I HAVE ALWAYS HAD MY CAR WASHED AND RUST PROOFED DURING THE WINTER EVER 2 WEEKS. LAST DECEMBER THE PAINT UNDER THE BOTTOM OF BOTH THE DRIVERS AND PASSENGER DOORS STARTED HAVING THE PAINT BUBBLE UP ON BOTH ROCKER PANELS.
NHTSA complaint: Structure
NHTSA lists 9 recall campaigns for the 1999 Mercury Cougar. Recalls are free to have fixed at a franchised dealer regardless of who owns the car now, but only if they were never done, so check the VIN of the specific car rather than trusting the model.
FEDERAL MOGUL IS RECALLING 6,903 AFTERMARKET BALL JOINT ASSEMBLIES SHIPPED BETWEEN NOVEMBER 9, 2007 AND MARCH 26, 2008, WHICH MAY HAVE BEEN PACKAGED WITH INCORRECT NUTS. THE PART NUMBERS PACKAGED WITH INCORRECT NUTS ARE: K7147, K7329, K8683, AND 104353. THESE PARTS WERE MADE FOR USE ON THE VARIOUS
Risk: THE NUTS INCLUDED IN THE PACKAGING FOR THESE BALL JOINT ASSEMBLIES ARE MISSING THE INTENDED PREVAILING TORQUE (SELF-LOCKING) FEATURE. IF THE INCORRECT NUT WAS TO BECOME LOOSE, THE JOINING MEMBERS MAY
Fix: FEDERAL MOGUL WILL NOTIFY OWNERS AND REPLACE THE PARTS FREE OF CHARGE. THE RECALL BEGAN ON MAY 22, 2008. OWNERS CAN CONTACT FEDERAL MOGUL AT 877-489-6659.
CERTAIN AFTERMARKET BRAKE HYDRAULIC MASTER CYLINDERS SOLD AS REPLACEMENT BRAKE CYLINDERS FOR CERTAIN FORD, DAIMLERCHRYSLER, AND JEEP PASSENGER VEHICLES. THESE BRAKE CYLINDERS WERE SOLD UNDER THE BRAND NAMES OF NAPA, RAYBESTOS, AIMCO, AC DELCO, CARQUEST, BENDIX, AND WAGNER. ONLY PRODUCTS THAT WERE
Risk: LOSS OF BRAKE FLUID CAN LEAD TO A DECREASE IN BRAKE LINE PRESSURE AND AN INCREASE IN STOPPING DISTANCE, WHICH CAN RESULT IN A VEHICLE CRASH.
Fix: AFFINIA (BRAKE PARTS, INC.) WILL REPLACE THE SUBJECT BRAKE HYDRAULIC MASTER CYLINDERS FREE OF CHARGE. THE RECALL BEGAN ON MARCH 20, 2006. OWNERS CAN CONTACT AFFINA GROUP CUSTOMER SERVICE AT 1-800-32
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE DOOR LATCH MAY HAVE BEEN MANUFACTURED WITH A LATCH PAWL THAT HAS A COATING WHICH WILL SWELL IN HIGH HUMIDITY CONDITIONS. THE LATCH PAWL MAY THEN STICK IN THE OPEN OR UNLATCHED POSITION.
Risk: THE DOOR WOULD NOT LATCH WHEN CLOSED. IF THE VEHICLE IS DRIVEN IN THIS CONDITION, IT COULD POTENTIALLY RESULT IN THE DOOR OPENING WHILE THE VEHICLE IS IN MOTION.
Fix: DEALERS WILL INSTALL A REVISED SIDE DOOR LATCH.
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE BRAKE LAMP SWITCH TERMINALS COULD OVERHEAT.
Risk: THIS COULD CAUSE EITHER A LOSS OF BRAKE LAMP FUNCTION OR CONTINUOUSLY ILLUMINATED BRAKE LAMPS, INCREASING THE RISK OF A CRASH.
Fix: DEALERS WILL INSTALL A NEW STOP LAMP EXTENSION HARNESS WITH BRONZE TERMINALS AT THE BRAKE LAMP SWITCH CONNECTOR, AND ALSO INSPECT THE BRAKE LAMP SWITCH FOR SIGNS OF OVERHEATING AND REPLACE, AS REQUIRE
| Reliability raw | 68 | good |
|---|---|---|
| Longevity est. | 72 | good |
| Maintenance | 90 | excellent |
| Depreciation | 60 | average |
| Performance | 45 | below average |
| Efficiency | 46 | below average |
Percentile ranks against other compact cars in the catalog.
What stands behind each score for this car:
Owners have filed 521 complaints with NHTSA for this model-year, and electrical system is the most reported area with 52 of them (10%). There are 9 recalls on record. Check any specific car against its VIN before buying.
AVOIR scores its reliability 68/100 (good) from NHTSA recall campaigns and complaint density. That figure is a raw complaint count, not yet adjusted for sales volume, so a high-volume model scores worse than it deserves.
AVOIR scores its longevity 72/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 1999 car has no 200,000-mile population to observe yet, so treat it as a prior rather than evidence.
AVOIR's read: be careful, because the numbers are mixed and the complaint record is worth reading before you commit. Its overall ownership score is 68/100. Condition, mileage and service history still matter more than any score, so get a pre-purchase inspection on the specific car.
Sources: NHTSA recalls and complaints, EPA fuel economy, IIHS awards, and live market listings. A score describes a model-year, not the individual car in front of you. Get a pre-purchase inspection.