The 1,074 cc side-valve engine came from the 1935 Opel P4 and came with the same listed maximum power output of 23 PS (17 kW) at 3,400 rpm.[2] The wheelbase, at 234 cm (92 in), was right between the little P4 and the larger Olympia.[3] The "11234" nomenclature stands for the engine's displacement in deciliters (11) followed by the wheelbase in centimeters (234).[4]