I leased this 2007 X3 for 3 years without a single mechanical or electronic issue. At around 25,000 miles I had to replace the 4 tires because they were worn out. otherwise no issues. we loved it so much that we bought an 09 X3 at the end of the lease. It's been 6 months since the 09 X3 and no issues at all.
fun ride, powerful engine for its class, reliable, all weather driving.
better storage space, wish they had the on board computer and the audio controls they have on the 3 series.