Originally Posted by Advevo
... First of all why does the 1M exist.
Because it uses a lot of parts from the M3 E92. Complete new development of an 1M would never happen. It all about the money guys. I think the same counts for M2. Maybe they use the same engine of the 1M and rework it to get better co2 and add 10hp.
I do think they are testing a 4 cil in an M2. But after a few back to back tests with an 1M they know which way to go.
Back in Oct '11 the 1M lead engineer mentioned that the new M3 test platform would ready also for the 1M successor.