A growing thread on the Android issue tracker is home to more and more reports of in-vehicle Bluetooth problems with the Nexus 5, 6, 5X, and 6P. The N5 and N6 allegedly only became affected when their Marshmallow updates rolled out, while the 5X and 6P, which run Marshmallow out of the box, have allegedly had problems from day one. Notably, the Bluetooth issue being cited supposedly was not present in the "M" developer preview releases for the Nexus 5 or 6, suggesting something changed recently to cause it.
The rather irksome bug manifests most commonly as follows. When attempting to dial out to a phone number when your phone is connected to your car via Bluetooth, the call will fail and the car's radio will resume playing whatever audio was on previously.Read More