[PLF69]

Only insight I can give you is my small experience, when I baught my used 2015 M235i they offered me 8 years total (4yrs after original waranty) unlimited km's for around 4-4.5k. I could also opt for powertrain only wich was around 2.3k.

I eventually baught an additionnel 2yrs on powertrain only for around 1.1k since I plan to buy an M2 or something else in 2-3 summers (I still my original waranty until next March)