Sadly, you cannot buy the M50d in the US. In addition to the massively cool engine, there are a few details on the car you can't get here either... I do not care for the current BMW marketing at all, I guess I am old-school. Don't call the car an X5 Xdrive 35i if the engine has only 3.0 liters of displacement! I prefer the old way when a 328 was actually a 2.8 liter and a 320 was a 2.0. We do plan to de-badge our car soon after delivery. But, I am tempted to source an X5 M50d badge and apply the "X5d" part of the badge to the back of our car.