Having a glance around - just to see whats available - as you do - and a rather well speced X5 caught my eye. 2006 3.0 diesel with all the bells and whistles. I know nothing about these cars - never owned a diesel before either - except that I would expect to get about the same fuel consumption as I currently do on my petrol 2004 W203 C200K. Its also in the same tax band as its 214 gm/co2 - so under the 225gm top limit. Pitfalls and plus points please. and any extra advice welcomed. Thanks in advance chaps.