It features sloping floors, folded steps, broad aisles and a designated space for wheelchairs and bicycles.

One of the trains, produced for Koleje Dolnośląskie, broke the Polish speed record of 211 km/h (131 mph) in 2013 on the test track, on 7 September 2015 a Newag Impuls 45WE unit for Koleje Mazowieckie once again topped this record with what is now the current one, 226 km/h (140 mph), which makes it the fastest passenger train produced in Poland.

Newag launched a second generation of the design, named Impuls II, in 2017 with an order of 14 trainsets from Łódzka Kolej Aglomeracyjna.

[4] In December 2023, it was revealed that Newag Impuls software had code that purposefully caused breakdowns of trains that were serviced by non-Newag workshops, were inactive for 10 days or fit in other arbitrary conditions, which has been likened to Dieselgate software manipulation.

This was discovered by reverse engineers hired by Koleje Dolnośląskie and confirmed by former Polish minister of digital affairs Janusz Cieszyński.