Starting with 2015 models, original maintenance plans are no longer transferrable.
https://f30.bimmerpost.com/forums/sh....php?t=1000906
Starting with 2014 cars, the CPO warranty is only transferable by paying a fee to BMW for a private sale, free for a BMW dealer sale, and non-transferable for a 3rd party dealer sale.
https://www.bmwblog.com/2016/03/18/c...es-owning-bmw/