The Horch 10 M 20 is a car of the upper class range introduced in 1922. It was the first car made by Horch after the First World War.
The design was developed by Arnold Zoller, after the take over of the engine company Argus.
The vehicle had a front-mounted four-cylinder inline engine with side valves and a capacity of 1.6 litres. The engine developed 35hp at 2000rpm. A four-speed transmission was fitted, this had a shift lever in the center of the car and power was sent to the rear wheels. The cars had a U-profile chassis frame and had leaf-sprung rigid axles.
The bodies were available as a four-seat tourer or city-coupe.
The technical director Paul Daimler designed a revised engine which had an overhead camshaft valve train which was driven by a vertical shaft. These changes gave the engine 50 hp at 2800 rpm. The car was offered in 1924 as the Horch 10 M 25, which was the first German car to have four-wheel brakes. By 1926, about 2300 cars had been made.
Beginning in 1926 sparked the Horch 8 from this model.