I bought the 2004 because I thought the iDrive demons had been exorcised. Not so, and other recurring issues forced me to tell BMW to take the car back... and they did. During my 30 months with the car, I drove every loaner car that the dealership had. They tried to fix things but the problems wouldn't show up when the car was in their hands. When they did, they couldn't come up with permanent fixes. There is a reason the 7 series made it to #1 on Consumer Reports list of most problematic cars. I am switching to a less complicated 5 series and the first time I have to take it in for them to reload the computer... I'm done with BMW.
Cool looks, awesome rear legroom, love the steering wheel heater. Out of all the cars I've owned this one drew the most compliments from friends, family and complete strangers.
Straighten out your computer issues! Then your cars will rock!