The TecnoTren units use readily available parts from the Argentine automotive industry, with the 1.7 litre engine being from a Fiat Duna, which doesn't necessarily have to be new.

[4] As a result, the railbuses are ideal for low-traffic rural lines while being easily adapted to the country's three primary track gauges.

[7] TecnoTren was established by Jorge Beritich, a former car body manufacturer that conceived and built a vehicle to run on abandoned railway tracks.

Beritich designed a prototype named "Microtren" in 2003 but it could not be tested until 2007, when the microtren made short trips in General Mansilla (renamed "Bartolomé Bavio" by its inhabitants), one of the stations of the line that joined La Plata with Las Pipinas in the south-east of Buenos Aires Province.

[8] Although Beritich died soon after the prototype was launched, the production of railbuses was continued by Tecnoporte, a factory in the El Talar district of Greater Buenos Aires.