1991 Mercury Cougar: Reliability Data

Source: NHTSA — 98 complaints
98
Total Complaints
95,000mi
Median Mileage
ENGINE AND ENGINE COOLING:ENGINE
Top Issue
5
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

82,250 25th Percentile
95,000 Median Mileage
95,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE AND ENGINE COOLING:ENGINE
15
VEHICLE SPEED CONTROL
7
EXTERIOR LIGHTING:HEADLIGHTS
6
SEAT BELTS
6
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS
4
ELECTRICAL SYSTEM:IGNITION:SWITCH
4
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
3
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
3
VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
3
ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
2

Severity Assessment

5
Crashes
8
Fires
10
Injuries
0
Deaths

Sample Complaint Reports

"FRONT SHAKES WHEN APPLYING BRAKES. TT"
"DRIVER SIDE WINDOW EXPLODED WHEN ROLLED DOWN. TT"
"WHEN EVER THROTTLE IS PUSHED, SYSTEM MAY STICK RESULTING IN FULL THROTTLE. PLEASE DESCCRIBE DETAILS. TT"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28