We had a Yukon before the X3 and really enjoyed it. Of course there is no comparison in the handling dept but it was a great vehicle.... Easy to get around in and the only time it went to the dealer was for a cd that got stuck.

I think bio-diesel is only for diesel engines.......... Besides.... I doubt trying to get BMW to cover an engine issue after you informed them you poured a cooking grease cocktail of fuel you made in your bathtub will go over real well.