The VT 42 was a diesel railcar developed from the VT 41 and also built by Simmering-Graz-Pauker. With a top speed of 110 instead of 80 km/h, it was designed for longer-distance trains. It was longer and heavier and had a much more powerful diesel engine, also from SGP. While the VT 41 had electric power transmission to both axles of one bogie, the VT 42 had one traction motor on each bogie. Power was controlled via RPM changes on the diesel engine with the GEBUS system.

After two prototypes with 78 seats each, twelve more were ordered with only 64 seats. All of these seats were of third class. After World War II, two vehicles stayed in Czechoslovakia. The other nine remaining became ÖBB class 5042. In 1963, the ÖBB built another one from parts of an incomplete 5042 and a 5043. Around the same time the vehicles were modernized and withdrawn by 1989. Today, only 5042.14 is being preserved and operational.