[Feddersen]

Originally Posted by Weiman

Much more than 3 years. The M550d was introduced in 2011 and the F20 M135i was introduced in 2012, for example.

First time we saw it was in 1985 in the E28 M535i - https://en.wikipedia.org/wiki/BMW_5_Series_(E28)

Edit: Correction. 1983 E24 M635CSI - https://en.wikipedia.org/wiki/BMW_6_Series_(E24)