08 M3 Sedan same issue
My car was at red light and it just stalled. I started it back up and no issued. But about 3 days later I am on highway I get error message "Engine Malfunction! reduced power" "Service Engine Soon" I am guessing it must be the idle issue that other people have mentioned.
Hey Wolf92 could you send me SIB info via private message so I could take it to my dealer. Thanx in advance.