2003 BMW 330I Engine cooling Problems
- Complaints
- 8about this part
- Share
- 10%of 77 total for the year
- Median mileage
- 5,750miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the engine cooling of the 2003 BMW 330I, 10% of the 77 complaints for this model year. Where a mileage was given, the median is 5,750 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“2003 Bmw 330I, I have an issue where the engine stalls when the coasting to a stop, or sitting stationary, and with the clutch fully depressed. Engine also exhibits uneven/odd acceleration behavior, often lagging noticeably at speed. I've had the car at the dealer to diagnose the problem on 4 occasions in the past year (19k miles) with zero resolution. Because the car isn't throwing an error codes, I guess that I have to just live with it . Not acceptable. This can be a dangerous issue, especially when coasting to a stop. …”
NHTSA complaint #10063714, filed 2004-03, 500 miles“There is a problem with the Bmw 3.0l engine where idling once the engine is warmed-up is usually very rough in the range of 500-700 RPM. There is also a tendency to dip below 500 RPM and stall out. This started happening when the car only had 700 miles on it. I consider the stall a failure.”
NHTSA complaint #10068034, filed 2004-04, 700 miles“2003 330I zhp (performance package) : 6k miles... Car idle's rough and stalls occasionally. Dealer / service had no error reports in the computer, said they could do nothing about it. Problem continues...”
NHTSA complaint #10064470, filed 2004-04, 6,500 miles“Erratic engine idle and stall.at idle engine rpms will drop causing a stall/stutter. This happens frequently and in all types of weather conditions. This effects all 330I zhp (performance pkg) model.”
NHTSA complaint #10061949, filed 2004-03Related service bulletins
- 10218378Jun 1, 2022A rattling/droning noise is heard in the vehicle interior when the air conditioning (AC) is activated. Vibrations are felt in the driver's footwell.
Engine cooling: other model years
Other parts of the 2003 BMW 330I
28 complaintsAir bags
24 complaintsElectrical system
10 complaintsTires
4 complaintsLatches, locks and linkages
3 complaintsBody and structure
3 complaintsTransmission and drivetrain
3 complaintsOther or unknown
2 complaintsWheels
2 complaintsBrakes
1 complaintsFuel system
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2003 BMW 330I
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology