Despite its lack of power, due to a general shortage of new cars in West Germany, the 170 was in steady demand.
Sales reached a new level in 1949, with the almost simultaneous release of a diesel-engined version of the 170, followed by a more luxurious 170S edition fitted with a more substantial 1767-cc engine that could develop 52 horsepower, and was much faster.
Another welcome advancement that came in 1950 was the release of the 170S sport version, available in either cabriolet or sedan form.
Production of the 170Vs and 170S sedans continued into the early 1950s, with various technical changes.
Early in 1952, to improve driver comfort, the 1705 began to be fitted with a column-mounted gearshift in place of the cumbersome floor change previously available.
During that same year, the 170V added transverse vent slots in its hood.