Every day there are more and more possiblilties, what in fact is not possible because the M3 is coming close to FEP, so what is hidden under the hood of the M3 should be known. I just say somebody (BMW M) is yet trying to hide the truth. BMW is so big, it is not as easy as for Ferrari to keep a secret. So the only way is to "confirme" and "deny" everything, mixing more and more together, to make us mad and believe in nothing.
But I tell you, the M3 has a 6 cylinder engine.