However, owing to Bombardier's discontinuation of this product line following their takeover of ADtranz in 2001, the price quoted was higher than that of newer models.

[1] Shortly thereafter, a further Variobahn was ordered as a replacement for a R-wagon heavily damaged by a construction crane and another 18 wagons were put on option.

[5][6] The first car, number 2301, was presented to the public at InnoTrans Berlin in September 2008 and delivered on March 11.

The approval was abruptly aborted by the Oberbayern technical supervisory authority on 19 July 2010 due to problems with the chassis, meaning that the trains could no longer be used in regular service until December 2011.

[citation needed] A commissioned report mentioned errors in the composition and the production of the rubber elements as a cause.

[20] On 12 December 2014, during maintenance work, cracks were discovered on the underside of the wagon boxes on seven different trams, which were then put out of operation.

[21] After further inspections by Stadler, on 7 January 2015, TAB, the Technical Supervisory Authority, ordered that vehicles which had not previously been affected by the damage should also decommissioned and remedied.