2004 Bmw 330Ci: Reliability Data
When Do Complaints Happen?
Distribution of NHTSA complaints by vehicle mileage at time of report.
What Fails?
Most reported component issues from NHTSA complaints.
Severity Assessment
Sample Complaint Reports
"WHILE DRIVING, THE CAR SHOOK VIOLENTLY, THE ENGINE RATTLED AND THE CAR LOST ENGINE POWER; THE CHECK ENGINE LIGHT WENT ON. THE CAR BECAME IMMEDIATELY UN DRIVABLE. IT WAS LATER DETERMINED THAT ONE OF THE CYLINDERS IN THE CAR MISFIRED AND COMPLETELY SHUT DOWN, SENDING THE ENGINE INTO A COMPLETE UNBAL..."
"BRAND NEW 2004 CAR. AUTOMATIC TRANSMISSION - USUALLY HAPPENS ONCE A DAY IN THE EARLY MORNING. COLD START, WHEN SHIFTING THE CAR INTO "DRIVE", IT TAKES A FEW SECONDS FOR "D" TO ENGAGE AND MUST REV UP TO 2000-4000 RPM TO GO FORWARD. VERY DANGEROUS WHEN STARTING ON STEEP ROADS BECAUSE THE CAR WILL SLIP..."
"I OWN A 2004 BMW 330CI. DRIVING IN REVERSE OUT OF MY GARAGE AND DRIVEWAY FIRST THING IN THE MORNING, THEN SHIFTING TO DRIVE WHEN I REACH THE STREET, THE TRANSMISSION DOES NOT ENGAGE UNTIL ABOUT 3-10 SECONDS. THE CAR WILL ROLL FREELY DURING THIS TIME AS IF IT WERE IN NEUTRAL. I HAVE NOT HAD AN INC..."
Source: NHTSA ODI Complaints Database. Names and identifying details omitted.
When Were Complaints Filed?
Number of complaints by the year the issue occurred.
When Does Each Component Fail?
Median mileage at complaint for top components.
Where Are Complaints Coming From?
Top states by complaint count.
Who Files Complaints?
Bmw 330Ci — Other Years
See how this model compares across different model years.
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
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