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2010 BMW 5 Series Sedan 535i 4dr Sedan (3.0L 6cyl Turbo 6M)
Unreliable, even new
 With less that 4000 miles the "engine malfunction-reduce power" message came on and the car would no longer start.  I was only 1 mile from the dealership but it took BMW assist over two hours to organize a tow (1 pm Monday)!  I was told by the dealership " we are seeing this a lot," but so far they apparently do not know how to fix it. I rated the car low on performance, build quality, and  reliability for this issue.  This is not the BMW "experience I was hoping for!