[merlin3008]

I'm certain the two cars do not have all parts in common. When finalizing a new model, BMW engineers probably had the opportunity to integrate parts and components that were available. No such opportunity on cars that are already in progress or models that are a year old. Look how many of us on hear complain when options and parts are switched mid-order. So it's not the I4 that frosts my cookies. It's the lack of reliable information about our own cars.