1999 Pontiac Montana: Reliability Data

Source: NHTSA — 329 complaints
329
Total Complaints
59,500mi
Median Mileage
ENGINE AND ENGINE COOLING:ENGINE
Top Issue
18
Crash Reports

When Do Complaints Happen?

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

48,750 25th Percentile
59,500 Median Mileage
83,356 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE AND ENGINE COOLING:ENGINE
31
ENGINE AND ENGINE COOLING
29
POWER TRAIN:AUTOMATIC TRANSMISSION
25
ENGINE AND ENGINE COOLING:COOLING SYSTEM
18
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
16
AIR BAGS
16
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
13
AIR BAGS:FRONTAL
13
LATCHES/LOCKS/LINKAGES:DOORS:LATCH
11
STRUCTURE:BODY:DOOR
10

Severity Assessment

18
Crashes
2
Fires
23
Injuries
1
Deaths

Sample Complaint Reports

"ELECTRICAL MALFUNCTION. PASSENGER SIDE POWER SLIDING DOOR DOES NOT CLOSE PROPERLY, WHEN CLOSING WITH POWER SWITCH THE DOOR MAKES 2-3 ATTEMPTS BEFORE IT CLOSES. DOOR HAS TO BE MANUALLY CLOSED."
"POOR DRIVING PERFORMANCE: LEANS ON TURNS, TAKES BUMPS HARD, AND FEELS LIKE THE CHOKE BOTTOMS OUT. THESE PROBLEMS DID NOT EXIST AT TIME OF PURCHASE."
"POOR DRIVING PERFORMANCE: LEANS ON TURNS, TAKES BUMPS HARD, AND FEELS LIKE THE CHOKE BOTTOMS OUT. THESE PROBLEMS DID NOT EXIST AT TIME OF PURCHASE."

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