technically the taunus g73a was little changed from the 1939 g93a, retaining the familiar 1,172 cc side-valve engine first seen in the 1935 ford eifel. with gasoline/petrol availability in europe restricted to low-octane fuels, the maximum power output was also unchanged, supporting a claimed top speed of 105 km/h (65 mph). it was not possible to adjust valve clearances and engines typically lasted for .