I have only had my X5 3.5 D for a few weeks but it is great to drive. We switched from a Honda Odyssey Minivan to use this as our family car. Driving this car is a pleasure unlike the Honda which was pretty boring. My wife has an highlander Hybrid which is like driving a refrigerator. I hate it. I also drove the Tahoe and the Cayenne which could not even come close to comparing to the X5. I couldnt believe what a POS the Cayenne was. Anyway I have a 2007 Z4 that has had no problems at all that was built at the same plant. I am hopeful the X5 is at least decent with reliability. I dont expect it to be as reliable as a Japanese car but it its sooooooo much better to drive that I can deal with some extra repairs.