I sold my 2001 X5 with 202,000 miles on it. I had zero issues with the transmission and never had the fluid replaced...
'03 E53 X5 3.0 | Premium | Rear Climate | Xenons | Privacy Glass
'08 Cayenne S | air suspension | privacy glass | Xenons
'09 F01 750i sport | premium sound | Cold weather package | Rear Wood Shelf | Bluetooth Audio
'10 E70 X5 xdrive30i sport | rear shades | rear climate | iPod/USB | Sat Radio | DVD in Motion activated
'11 K46 S1000RR | Race DTS
'13 328i drive | premium | heated| executive | privacy glass