Eric 
2007 BMW X3 SUV 3.0si 4dr SUV AWD (3.0L 6cyl 6M)
Dr. Jeckyl/Mr. Hyde
 This is our 3rd X3, and I loved the other two, both 2005s. This seems to be a different vehicle.  Same great finish and handling, but awful acceleration. As written elsewhere, it is bothersome and dangerous.  I loved the responsive, fun to drive qualities of our other X3s.  This one makes me scared to enter the highway. Not so fun.  Once you get past 40, it is fine, but getting there can be tough.  Sometimes you punch it and boom, other times you count to three before anything happens.  Someone is going to get into an accident because of this.  We went to the dealer and they tried a software fix, but it only made it marginally better and we seem to have lost 1-2 MPG. Disappointing.