1991 Oldsmobile 98: Reliability Data

Source: NHTSA — 69 complaints
69
Total Complaints
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
Top Issue
7
Crash Reports

What Fails?

Most reported component issues from NHTSA complaints.

SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
14
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER
6
AIR BAGS:FRONTAL
4
ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
3
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS
2
ELECTRICAL SYSTEM:12V/24V/48V BATTERY
2
ELECTRICAL SYSTEM:WIRING
2
POWER TRAIN:AUTOMATIC TRANSMISSION
2
EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT
2
EQUIPMENT:APPLIANCE:AIR CONDITIONER
2

Severity Assessment

7
Crashes
2
Fires
3
Injuries
0
Deaths

Sample Complaint Reports

"THE ABS BRAKES FAILED WHEN TRIED TO BE APPLIED, CAUSING AN ACCIDENT. *AK"
"REPLACED MASTER CYLINDER. *AK"
"LOSS OF BRAKES THREE DIFFERENT TIMES, REPLACED MASTER CYLINDER. 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