Since the opening of the S-Bahn network from 1972 to 2004, vehicles of the DB Class 420 have been used in the Munich S-Bahn network. In 1972, however, only 101 of the ordered 120 trains were available, so that on some routes until 1975 had to be driven with turning trains. The first 120 vehicles came from the first series of this series. In the following years, due to the higher demand for vehicles, about 30 vehicles of the second construction series came to Munich. The number of trains of the second series of construction varied, as they were also exchanged with vehicles from other cities. From 1979 to 1982 also came vehicles of the fifth and sixth series to Munich, these were used after 1982 but again in other suburban rail networks. From 1992, some vehicles of the seventh and from 1996 the eighth series were added, so that the vehicle stock in Munich in 1996 included 209 vehicles. Since the delivery of Class 423 vehicles, the Class 420 trains have been delivered to other cities, sold or scrapped. For the time being, the last regular passenger service in the Munich S-Bahn network drove a train of this series, the so-called "Olympia motor coach", on 5 December 2004 on an amplifier circulation line S 8 and was since then only in the museum service at regular special trips to be found.