I have a 2011 M37 S with approx. 5500 miles at present purchased August 2010. I've been having major issues with the transmission. The problem is that the transmission never seems to know what gear to be in, feeling in some instances of major hesitation,or that it's either in neutral or 7th gear upon acceleration. I've taken it back to the dealer 3 times for this issue, and they continue to tell me that it's "normal operation" for this vehicle and it has the latest software. I did find several records of this issue at safercar.gov, but again the dealer said it's normal operation.
We also have a 2011 G37Xs, that has none of the issues of the M, additionally, the G having the same engine, I'd assume that the transmission software would also be the same(except for the AWD)
I'd appreciate any thoughts or guidance anyone can offer