2001 BMW X5 3.0i AWD 4dr SUV (3.0L 6cyl 5M)
My X5 is comfortable and has plenty of power, even though it is the 6 cylinder. I have had it back and forth to the local dealership at least 15 times while I have owned it with various problems. Some of the problems, from a faulty security system to a steering wheel that was replaced and still didn't function properly were repetitious. I will be trading this vehicle in immediately. Bad mistake.
Heated front seats and the climate control system that heats the vehicle once it has been turned off (@ 30 minutes).
All my suggested improvements are centered around quality control issues. Obviously, quality control was not at the top of BMW's list when my vehicle rolled down the assembly line.