What I found odd about CR reliability reports on the X5 is that only one category was below avg or poor on the 2009 X5 (the fuel system). Two categories were average and the rest was good or better. Yet, the 2009 X5 overall reliability was a tad below average.

However, other cars/suv's that had good overall reliability ratings would often have many more specific major areas that were rated below average or poor (2 or 3 black marks).