Every bmw i have owned or friends have owned have had problems but as the people not doing upkeep on cars i know i change oil in csrs and all day u see people put conventional oil in their cars that say full synthetic only on the oil cap and the catalyst but they always say give me the cheap oil thats to expensive or they say the dealer does it cheaper but im already here bottom line people r dumb they let their cars fall apart because they dont think the cars gonna mess up untill it actually dies on them but oh well not my problem i take care of my baby