pedalian 
2009 BMW X5 Diesel xDrive35d 4dr SUV AWD (3.0L 6cyl Turbodiesel 6A)
Our First Diesel
 Purchased this as a demo vehicle, have put over 4000 miles on it so far.  The diesel is amazing.  This thing has power!  My wife drives it to work every day on the freeway, getting about 28mpg on the highway.  Our combined average is 24.5 (according to the computer).  Very comfortable to drive.  We do have the 3rd row seats and they are pretty useless except for kids under 12.  We checked out the VW Tourareg TDI as well and liked it too, very much.  Almost got it instead, but we got better financing through BMW Financial.  No regrets. Engine can use B5 biodiesel according to the manual, and I have been using that as well.  No issues. (I mix 100% biodiesel at 20:1 ratio with regular diesel).