The MAN D2676 LE621 engine provides the ideal conditions for the innovative drive technology of Alstom’s Regiolis railcar: Thanks to the compact installation dimensions and low weight of the vertical MAN engine, the complete drive package comprising diesel engine and generator, air filter, cooling, exhaust, electrical and electronic systems can be arranged on the roof of the vehicle. The improved access considerably simplifies servicing while at the same time, the end-to-end low floor section realised inside the vehicle noticeably improves passenger comfort.