They were ordered exclusively to operate along the Marmaray commuter rail network in Istanbul with delivery beginning in 2011.

The first EMUs went into service along Istanbul's two commuter rail lines from 2012 and 2013.

On 29 October 2013, the first 5-car sets began operating between Kazlıçeşme and Ayrılıkçeşmesi as part of Phase I of the Marmaray project.

[1] Hyundai Rotem announced on 11 November 2008, that it had signed a €580 million contract to supply the rolling stock for the Marmaray project.

The Korean firm had competition from shortlisted bidders Alstom, CAF, and a consortium of Bombardier, Siemens, and Nurol for the 440-vehicle contract which was placed by the Ministry of Transport's General Directorate of Railways, Harbours, and Airports.