It is the first type of rolling stock on the Hamburg U-Bahn that has air conditioning and gangways between the individual cars.

[2] The interior consists of red upholstered seating, and spaces for wheelchairs[1] and prams.

[1] The car bodies are made out of stainless steel, and the trains are powered by three-phase motors.

[5] Siemens, Stadler, Rotem and a consortium of Alstom and Bombardier bid for the contract.

[1] The trains were ordered in December 2006 from the consortium of Alstom and Bombardier at a cost of €240 million.