I just think it's funny that some of you think that auto-start stop will be such a detriment to your M3! Why would BMW incorporate a technology that will negatively effect the longevity of your vehicle?? It's not like the 2011.5 M3 is the first car made to use this feature.
Personally I welcome the technology and I'm glad I waited to order my ED e92 M3 (hopefully by December) and I'll be happy to increase my mpg by .25-.5 and also decrease my carbon footprint a little
So I understand if you don't want to use the auto start stop but don't discredit BMW for trying to make our cars more fuel efficient.