2021 Bmw 330I: Reliability Data

Source: NHTSA — 39 complaints
39
Total Complaints
ELECTRICAL SYSTEM
Top Issue
3
Crash Reports

What Fails?

Most reported component issues from NHTSA complaints.

ELECTRICAL SYSTEM
11
ENGINE
6
UNKNOWN OR OTHER
5
AIR BAGS
3
FORWARD COLLISION AVOIDANCE: WARNINGS
3
LANE DEPARTURE: WARNING
2
SUSPENSION
2
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1
STRUCTURE:BODY
1
POWER TRAIN
1

Severity Assessment

3
Crashes
5
Fires
3
Injuries
0
Deaths

Sample Complaint Reports

"My sunroof exploded randomly, without warning as I was traveling on the highway at approximately 65 MPH. There was no impact from an object. The cloth cover beneath the sunroof was fully intact and undamaged after the incident."
"Engine Wiring is made of Soy products with attracts Rodents to feed and destroy the wiring. When this occurs it puts the driver ad passengers in danger because certain functions such as brake light, Headlights and windshield wipers may not work properly. This is becasue when the wiring is compromis..."
"Engine Wiring is made of Soy products with attracts Rodents to feed and destroy the wiring. When this occurs it puts the driver ad passengers in danger because certain functions such as brake light, Headlights and windshield wipers may not work properly. This is becasue when the wiring is compromis..."

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