After reading through all the relevant threads, I've decided that I will rebadge my 1-Series M as follows, regardless of the final name put on it by BMW:
MI-6,
denoting that it's the only inline 6 powered M car. Yes indeed Miss Moneypenny.
But I'll make the "I" look almost indistinguishable from a "1".....
After which,
I vill ruullleee ze vorrrllld....