Due to an increase in traffic, Ferrocarriles Vascongados decided in the 1920s to electrify its main line between Bilbao and San Sebastián.

Thus, the company ordered six railcars to be used for hauling passenger trains with up to seven cars.

However, due to problems with their design, the first batch wasn't delivered until 1944, and the first reengined railcars entered service in 1948.

By 1979, the only remaining train was MCD 1, used at the time to operate services between Bilbao-Atxuri and Usansolo.

It was stored in Durango and later Gernika until 1989, when it was sent to Azpeitia for preservation at the Basque Railway Museum.