The Class 430 EMU is an electric railcar for S-Bahn commuter networks in Germany, jointly developed by Bombardier and Alstom.

In October 2011, the Transport Committee of the Stuttgart Region decided to order 4 more Class 430s to cover additional services.

In December 2009, the Verkehrsverbund Rhein-Ruhr announced that the Class 430 would be used, with deliveries to be completed by the end of 2012.

In April 2011, it was announced that orders for additional vehicles had been canceled, due to the upcoming tender of lines S5 and S8.

They have an air-conditioned passenger area, and have gap bridging to prevent entry and exit accidents.

The vehicles for Stuttgart are equipped with 16 surveillance cameras per train, glass shelves, and LED lighting.

The cab meets the EN 15227 standard (requirements for crashworthiness for railway vehicle bodies) and is therefore longer than that of the corresponding Class 423.