In December 2015 DB Regio subsidiary S-Bahn Berlin awarded a consortium of Stadler Pankow and Siemens a framework contract to supply up to 1380 vehicles, with the initial order for 106 trains comprising 85 four-car and 21 two-car sets.

Aluminium bodyshells are being fabricated at Stadler’s plant in Szolnok, Hungary, and the first delivery is a driving car for a four-car train.

The first 10 pre-series trains will enter service on Line S47 from Südkreuz to Spindlersfeld in January 2021. Delivery of the initial batch of series trains will be completed by 2023.