These vehicles were a series of 16 diesel powered railcars designed for high speed local service. They were given the numbers 137 326 to 331 and 137 367 to 376 by the Reichsbahn. Since they were only delivered after the outbreak of war, they were no longer used as planned in the Szczecin area. In order to keep up with the time, the requirements stipulated that the entire propulsion technology be housed under the floor and that the power be transmitted with a hydrodynamic transmission. Therefore, various manufacturers developed boxer engines, all of which had the same dimensions of the engine mounts. Each railcar consisted of two parts, each of which had an engine which acted on the front axle of the front bogie.
During the war only test runs took place, whereby the engine power turned out to be insufficient. This problem could be solved by providing the engines with turbochargers and thus increasing the output from 275 to 400 hp each.
Nine railcars survived the war and came to both German railways. At the Bundesbahn they were designated VT 455 and received new transmissions from Voith. In 1960 they were modernized and, in addition to new, weaker engines, also received a new interior design. They were decommissioned in 1969. The preserved vehicles were used by the Reichsbahn in the areas of Berlin, Stendal and Dresden. Although a few vehicles with damage in the propulsion system were converted to trailers at the beginning of the sixties, they were withdrawn from service by 1967. Only one survived longer and was assigned to the class 197.
