Diesel is the way to go - honestly, go and drive one. With BMW, its all about performance. They build a car/suv for speed and handling. If you are not a driving enthusiast, taking turns at a high rate to see and feel the car stay planted then no need to go for the gas powerplants. If 0-60 matters to you, then diesel is not for you. From what I've seen, looks like diesel will retain a higher trade in value than gas version. Operating cost should be lower and for those looking to tow a boat/trailer, can't beat the torque of the diesel. Fueling is not an issue as you won't visit the gas station as often (which is when you'll be glad you bought the diesel). Exterior wise, car is the same and you can order the 20" and sports package if you really want. Aside of that, they are fairly quiet and do require the DEF every so often. DEF (Diesel Exhaust Fluid) is available at truck stops far cheaper than going to the dealer and if you can add washer fluid, then you can add DEF.

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SOLD - 08 X5 (Titanium Silver w/Black Nevada with all options).