In 2006, Euskotren awarded Ingeteam the construction of 12 diesel-electric locomotives for 37.5 million euros.

[1] The first locomotives were delivered in early 2009,[2] and entered service later that year.

[citation needed] The purchase has been criticized due to the low usage of the locomotives,[3] caused by an overestimation of rail freight demand.

[5][3] In 2015, three of the locomotives were converted to 1,067 mm (3 ft 6 in) gauge and sold to FE EP, the national railway of Ecuador.

[6] Each unit is named after a river of the Basque Country.