The 160km/h three-car trains are now being used on Styria S-Bahn Line S1 from Graz to Bruck-an-der-Mur and Line S5 from Graz to Spielfeld-Strass on the Austrian-Slovenian border.

ÖBB ordered 31 class 4746 suburban EMUs and 70 class 4744 regional EMUs from Siemens in 2013 in a deal worth €590 million. The class 4746s will be used on Vienna S-Bahn services whilst the regional sets will go to the provinces of Lower Austria (35), Upper Austria (17) and Styria (18). The S-Bahn variant seats 244 passengers while the regional version will seat 259.

The first Cityjets entered service last month when class 4746s were introduced on Vienna S-Bahn Line S80 from Vienna Hirschstetten to Ebenfurth and Wiener Neustadt.

ÖBB says nine of the trains for Styria will enter service this year with the remainder due for delivery in 2017. The entire fleet of 101 trains is due to be in service by January 2018.