 This is my 3rd BMW and by far the best.  The performance is awesome and the panoramic glass roof is unparalleled.  I am averaging 18 and 22 miles per gallon.  Sound system is great and the you hear no noise from outside.  Suspension is great and the power of the twin turbo is incredible.  Handling is awesome too.  takes curves with ease and does not drive like a typical SUV, more like a sedan.