[bmwqt]

I still haven't decided whether I should go with the 230i or M240i. In any case, I might just go with the base model and M/T for either.

One thing I'm still questioning thought is whether the engine in the M240i would be more reliable than the one in the 230i. I heard many times that the N20 was less reliable than the N55. Not sure by how much, by it was more frequent to read about timing chain issues on N20 than N55 for instance.

For the new B58/B46, has anything already pointed in favor of B58 being more reliable? I know that they went back with mechanic water pump for M240i, is the same true for 230i?

I'm still not convinced if it's worth to pay $10k more for the extra power I won't be using, however between a used 228i and M235i I was going in favor of the M235i mainly due to hearing good things about N55.