The first test drive took place in October 2012 in Bydgoszcz Wschód Station, and later on the railway lines to Inowrocław, Poznań[2] and Zduńska Wola Karsznice.

On 11 January 2013 the locomotive began test service with Lotos Kolej, and later also with PKP Intercity, Pol-Miedz Trans and Orlen KolTrans.

After the test service was successfully concluded, the RTO has issued the final, permanent certificate for the 111Ed (with variants 111E, 111Eb, 111Ec) locomotive on 10 July 2014.

[6] As of 2021, Pesa, together with IPS Tabor, works on a bi-mode Gama (111DE) with a more powerful diesel engine that would enable it to be used as a mainline locomotive on both electrified and unelectrified railway lines.

[7] Polish long-distance passenger transport company PKP Intercity has taken delivery of 10 diesel locomotives (111Db), They have been classified as SU160.