I'm the other one
It all depends on the way it is used.I have a track car and my daily job includes hauling a good amount of stuff in the trunk,sedan or hatch wont work.So I moved from 03 X5 4.6is (16 mpg avg/14mpg towing) and 06 530xit(18 mpg average) to just one 12 X5D.22 mpg average and up to 19 mpg when towing.The fact that it cost me less than 30 grand total doesnt hurt either.