M2, M2 Competition & M2 CS (2015-2021 | F87)
OK this "no dipstick" thing is a new one to me, and I just wanted to ask about it!
According to p205 on, of the handbook I have there's the iDrive monitoring aspect, which I presume gives a crude summary, and then there's the "detailed measurement" where the "top-up amount is specified in the...