[1] These were to be put into service once the Córdoba, Santa Fe and Las Heras stations were opened.

[3][4] In late 2014, the order was expanded by 50% to include an additional 60 cars for Line D to replace the ageing Fiat-Materfer cars built in the early 1980s.

[5] The cars are designed to work with Communication Based Train Control (CBTC) to ensure a better frequency on the lines.

[6] They come installed with security cameras, audio warnings for approaching stations and are accessible to the disabled.

[7] The cars also have air conditioning and a system to prevent cars from stacking atop one another in the event of a collision, as well as being equipped with black boxes in the conductor's cabins.