A total of 97 trainsets were built, initially by Waggonfabrik Uerdingen and later Scandia.

Starting in 1981, the class MRD was introduced to better accommodate passengers' luggage, and from then on the MR–MRD formation has been used.

[7] The trainsets can run in multiple, with up to five carriage pairs in a train having been used.

[9] In addition, 13 MR–MRD trainsets were sold to Arriva in Poland in 2007–08.

[10] As of 2016, many of the MR/MRDs have been retired, while two trainsets are preserved by the Danish Railway Museum.