The M10 overhead camshaft engine used in the New Class was required to displace 1.5 L initially, with the possibility to be expanded to 1.8 L. Von Falkenhausen had earlier designed an engine prototype for possible use in the BMW 700 and used this as a starting point for the M10. The engine was canted over at 30 degrees to the right of vertical in order to allow for the low bonnet line, which also contributed to the styling of the car.
