Coreect I can confirm, (by the way I have the same car/year). The issue with calling in the car and not hearing the dialing has disappeared with update 6.0.1
Re: Android 6.0.1 Rolling Out Starting Today
Yup, Have the same issue.. the work around for the time being is to delete your Hotmail account and then re add it. But yes, It is a big battery drain.