[2][3] Tendered for by PRASA, this order called for the production and delivery of 600 Mega trainsets, comprising 3,600 units, to be delivered between 2015 and 2025, as well as the first 18 years of fleet maintenance.

[1] It has been claimed that the vehicle consumes 31 per cent less energy in comparison to its legacy counterparts, which has been attributed to its light-weight construction, achieved in turn via a stainless steel structure and the adoption of insulated gate bipolar transistor (IGBT)-based regenerative braking system.

[1] The X'Trapolis Mega is equipped with an automatic train operation (ATO) signalling system; this facility enables it to optimally navigate through highly-trafficked networks and reduced the impact of congestion.

The design of the train embraces modularity, reliability and high capacity, while the vehicle itself is intended to be applied to suburban and regional transport roles.

[1][5] The Mega has been offered with a range of modular options, such as different train lengths, either single-decker or double-decker configurations, variable carriage width and adjustable number of doors.

[1] The vehicles built for PRASA feature three external sliding double-doors on each side of every carriage, while the interior is furnished with a modular seating arrangement.

[1] Efforts have been made to ease both the boarding and alighting process through the adoption of fairly wide doorways and the presence of step-free carriage entrances.

Each carriage is furnished with comfort measures, including air conditioning systems and ergonomic seating; while areas specifically designed for people with reduced mobility have also been provided.