To modernize traffic on narrow-gauge railways, PKP had a railcar developed by FAUR in Romania. In the years 1984 to 1986 a total of twelve vehicles for meter gauge and 20 for 750 mm gauge were built. At the same time, 100 passenger cars were built that looked similar to the MBxd2. However, these were mostly pulled by locomotives and only very sporadically attached to the railcars. After passenger traffic had been discontinued on many narrow-gauge railways around the turn of the millennium, some private companies took over the vehicles and used them again on these lines. 