My leased 04 X3 had a residual of 23K, and not a single problem in the 2.5 years I had it. Avoid the 2.5, go 3.0 and get one with the moon-roof, it's huge!
Awesome driving car, a little ugly compared to it's big brother the X5. Used to give all sorts or sports car a run for their money going up 17. X-drive is the Sh#t.