Two problems related to engine stall have been reported for the 2001 BMW 330. The most recently reported issues are listed below.
Engine stalls on a few occasions when vehicle was turning left at low speed, causing temporary loss of power steering. Was able to quickly re-start the engine every time but could have caused crash otherwise. This occurred more frequently after 2008 (and after 60k miles), both at low speed on local roads and at 45 ~ 55 mph on highways, summer or winter conditions, with or without ac turned on. Occurrences are infrequent and unpredictable. Reported to my BMW dealer several times but dealer was unable to replicate the problem and unable to diagnose the issue. Otherwise, the vehicle drives perfectly fine and I love it.
2001 BMW 330i. Engine stalled any time. Happened after engine already warm up (after drove about 1 hour).