M10 4 Cylinder 1962 to 1988

The engine was designed by noted engineer and race driver Baron Alex von Falkenhausen.in the late 1950s, He was asked to design a small-displacement (1.3 L) engine, but felt that this would be insufficient for the company's future needs. Therefore, he convinced BMW that the capacity should be 1.5 L instead and he designed a block that could be expanded to 2.0 L in the future.

The BMW M40 series of engines replaced the M10 in the late 1980s.