1991 Pontiac Bonneville: Reliability Data

Source: NHTSA — 26 complaints
26
Total Complaints
POWER TRAIN:AUTOMATIC TRANSMISSION
Top Issue
4
Crash Reports

What Fails?

Most reported component issues from NHTSA complaints.

POWER TRAIN:AUTOMATIC TRANSMISSION
3
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS
3
VEHICLE SPEED CONTROL
2
SEAT BELTS:FRONT:WEBBING
2
ENGINE AND ENGINE COOLING:ENGINE
2
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
1
EQUIPMENT:APPLIANCE:AIR CONDITIONER
1
STRUCTURE:BODY:DOOR
1
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
1
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
1

Severity Assessment

4
Crashes
1
Fires
3
Injuries
0
Deaths

Sample Complaint Reports

"AUTO TRANSMISSION HAS BEEN REPLACED TWICE. TT"
"CRUISE CONTROL LOCKED 65 MPH; WOULD NOT RELEASE;ENGINE ACCELERATED;EXCESSIVE EFFORT TO STOP VEHICLE;VERY CAREFULLY BRAKED; RODE BRAKES 6 TO 7 MILES; NO WARNING."
"CRUISE CONTROL LOCKED;65 MPH;WOULD NOT RELEASE;ENGINE ACCELERATED;EXCESSIVE EFFORT TO STOP VEHICLE;VERY CAREFULLY BRAKED; RODE BRAKES 6 TO 7 MILES; NO WARNING."

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