Most components are built in Argentina, with the exception of a few such as its German Knorr Bremse brakes and Swedish Scania engines.

[2] Some of the passenger comforts in the cars include; air conditioning, pneumatic suspension, reclining seats and LED lighting.

The first trainsets were sent to Entre Ríos Province for inter-urban services on the General Urquiza Railway's Paraná - Concepción del Uruguay line.

[5] CMM 400-2 trainsets on the Mitre Line were used for its diesel branch between Victoria and Capilla del Señor.

[6] Therefore, the CMM 400-2 units were reassigned for them to been used for the Tren del Valle, which became the most successful train branch in the country since it opens in 2015.