Each vehicle carries its own powertrain, driving both axles on one of the vehicle's bogies via cardan shafts. Each powertrain consists of a Cummins QSK19 turbo-diesel engine driving a Voith T312bre three-speed hydrokinetic transmission, which in turn drives the axles via Voith SK-485 and KE-485 final drives. The other bogie on each vehicle is unpowered. The engine and torque converter were frame-mounted underfloor and suspended from the car body by flexible mounts. A third underfloor module contains cooling systems and an electrical generator. The transmission includes an integrated hydraulic retarder. Cooling fans and the electrical generator are powered via a hydrostatic drive. The electrical generator provides a 400 V 50 Hz three phase electrical supply for the train, which is transformed or rectified to a 230 V 50 Hz single phase supply, a 110 V DC auxiliary supply, and a 24 V DC battery supply. Connections bridge the main 400 V AC and 110 V DC supplies across the cars of each train set. Component suppliers included Dellner (couplings), ZF (dampers), SKF (bearings), and Westinghouse Brakes (now Knorr-Bremse, braking systems).
