It is the possibility to match the Americans or outdo them. Because there are mainly six-cylinder in the luxury class. Although Chevrolet does have an (older) eight-cylinder engine, but Henry Ford's V-8 is not yet invented. Thus, the existing engines are not able to hold a candle to the in the Horch 8, as it is called until to the presentation.
Two overhead camshafts are already good and if they are then also still driven space saving by a upright shaft, the better. A typical construction of Daimler's son Paul, who belongs to the company consortium since 1923. Add to this a dignified processing, well visible in the pictures above. The company Horch achieved with these and much more with the rapidly following models a leading market share in the luxury class.