I drove an 04 Cayenne S before my E70 4.8 sport and the BMW sure does feel slower off the line. I have tested my X5 in perfect conditions many times and not once did I hit 60 mph in under 7 seconds. I also timed the video link 5 times and couldn't get any better than 7.1

I agree that BMW may have been a little optimistic with the 0-60 performance stat.