Originally Posted by cheezypoof
Today, yesterday, last year - it's all the same. Diesel is $0.60 more per gallon than 87 octane gasoline, and almost $0.30 more than premium. The reason I was comparing to 87 octane is that the above discussion wandered over to the 2.5L Jetta, and the majority of diesel options should be compared against non-performance gasoline powertrains.
Even if you take into account the price difference between 87 and diesel, you still spend less on fuel on the diesel variant. Let's not forget, with the 2.5 I5, it is pretty hard to maintain that combined expected 26 MPG rating, whereas the 34 combined for the diesel can be done by beating on the engine constantly. It is closer to higher 30s, whereas average values for the 2.5I5 are low 20s combined.
2011 X5 xDrive 35d Red/Black: ZCW, ZPP, ZRC, ZTP, 300, 386, 496, 4AB, 6FL, Combox, LED Coronas. 04/11 Production