citroen3 
2011 BMW 5 Series Sedan 550i xDrive 4dr Sedan AWD (4.4L 8cyl Turbo 8A)
buyer beware!
 I bought a 2011 550i Xdrive in late 2010, within the last six weeks I have had;4 runflat tires (on 19inch wheels) go bust over fairly minor pot holes. they were 4 unrelated incidents. Cost to replace, just shy of $2000.Last week my car with about 10,500 miles on the clock, broke down on the highway, message 'transmission malfunction'. One tow and 5 days, later I got it back with the rear differential replaced.One day after I got it back from the local BMW dealer, new warning '4 by 4 chassis stabilisation malfunction contact your BMW dealer , do not brake hard'Given that this fully loaded, nearly $70,000 car is completely unreliabe, I am seriouly thinking of getting rid of it.