My 2007 X5 4.8L has 64,000 km and it's been trouble free to date just some small odd stuff like the wood trim on the door had faded, a couple PDC's had peeled, etc all covered under warranty. I also bought the extended warranty so I shouldn't be too concerned. Love the truck and it's got some nice get up and go when you need it. All I need now is to buy a gas station...the X is a little thirsty.
07 X5 4.8L Monaco Blue on Tan - Sport, Premium, Technology, Cold Weather, Rear Climate, Rear DVD, 3rd Row, extended wheel arches with M wheels