The X5 (when it arrives next month) is going to be a family car so I anticipate running it for at least 5 years. My cars until now have been kept for much shirter periods but what used to be glacial depreciation has turned into more like a waterfall so cars will be kept for longer! Having said that my 535d I am selling after 3 years has retained 63$ of it's value which I think is very good....I did get a very good deal when I bought it though/

I have specced the X5 very highly in the hope I will not regret not getting anything which will help me to keep it for longer!