In September 2009, the Pomeranian Voivodeship announced a tender for two- and three-car diesel multiple units (DMUs).

[7] Newag, aiming to enter a new market, collaborated with Kraków-based EC Engineering [pl] to design these vehicles (models 220M and 221M) and began production in February 2010, even before signing a contract with the Pomeranian Voivodeship on 21 May 2010.

[18][19] The Newag 222M is a two-car, single-space, partially low-floor diesel multiple unit designed for regional services on non-electrified lines.

It includes a platform at one set of doors to facilitate boarding, a dedicated area for a wheelchair, and a TSI PRM-compliant accessible toilet.

[3] Additionally, the unit is equipped with forced-air heating, dual-zone air conditioning, 230 V power sockets, a passenger information system, and surveillance cameras.

[3] The propulsion system includes two drive units with a 390 kW diesel engine, an automatic hydrodynamic transmission with a retarder.

[25] On 16 June 2015, Newag signed a contract with Masovian Railways for the delivery of an additional 222M, identical to the previous one, which was to be delivered by the end of 2015.