Took delivery of my 2009 X5 Diesel in the midst of a winter storm while driving from Edmonton to Grand Prairie. The car displayed all the remarkable driving traits of a BMW and performed impeccably.
The IDrive system was not a problem if one actually read the manual and is computer literate.
As the car was still being broken in, I did not push it and just cant wait to push it!
Would love to trade stories with anyone with experience of the new diesel !