I know there was a thread about the RPMs jumping/fluctuating on some start-ups. Our X3 is doing it pretty consistently, but is also stops about 10 - 15 seconds in. I realized I caught it on video when I was looking at an old vid. You can hear the rpms going up and down in the very beginning, and it stops and gets steady right around 16 - 17 seconds into the vid. Can those of you who said their X3s did this chime in and let me know if this is what your X3's sound like when your RPMs jump upon start up?