"How reliable is the 1999 Cadillac Deville?"

"Based on 239 NHTSA complaints, the 1999 Cadillac Deville has a median complaint mileage of 65000 miles. The most common issue is AIR BAGS:SIDE/WINDOW."

"What are common problems with the 1999 Cadillac Deville?"

"The most frequently reported component in NHTSA complaints for the 1999 Cadillac Deville is AIR BAGS:SIDE/WINDOW, accounting for a significant portion of the 239 total complaints filed."

1999 Cadillac Deville: Reliability Data

Source: NHTSA — 239 complaints

239

Total Complaints

65,000mi

Median Mileage

AIR BAGS:SIDE/WINDOW

Top Issue

Crash Reports

When Do Complaints Happen?

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

38,000 25th Percentile

65,000 Median Mileage

90,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

AIR BAGS:SIDE/WINDOW

AIR BAGS:FRONTAL

ENGINE AND ENGINE COOLING:ENGINE

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

ENGINE AND ENGINE COOLING

ELECTRICAL SYSTEM

AIR BAGS

TIRES

VEHICLE SPEED CONTROL

STEERING

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"WHILE DRIVING AT ANY SPEED THE VEHICLE WILL SHUT DOWN WITHOUT PRIOR WARNING. DEALER INSTALLED A BLACK BOX, AND THE CONSUMER STATED THAT IN COLD WEATHER CAN'T PUT GAS INTO THE GAS TANK DUE TO THE COVER AND CAP FREEZING UP. ALSO, WINDSHIELD WIPERS DON'T WORK. THE BUTTON FOR THE HIGH AND LOW WORKS ..."

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