One problem related to car stall has been reported for the 2009 BMW 335. The most recently reported issues are listed below.
I was driving on the interstate when my car started to lose acceleration. I could not accelerate up an incline. Then I heard a rattling. The next exit was a rest stop and as I was exiting my vehicle failed and shut down. I had no power at all. I coasted to a parking stall and turned the vehicle off after parking it safely. When I opened the hood the vehicle was not hot or smoking so I tried to start it. The car started but with a very loud knocking and rattling so I shut it off again and phoned the dealership. I towed the vehicle to the dealership over 30 days ago and have not been contacted by them not 1x. I have called weekly to no avail.