In January 2009, Euskotren awarded CAF the construction of 27 3-car EMUs[6] for 129 million euros, excluding VAT.

[citation needed] The contract was later extended to 30 4-car EMUs for 201 million euros.

Five days later, on March 21, it made its first test trip on the Topo line.

[9] The series entered service on that same line (Euskotren's busiest) on July 22.

[12] Wheelchair spaces are provided at one end of the two intermediate cars,[13] the doors near them are equipped with ramps.