The MBE 4000 was introduced in 2004 and is one of the most advanced medium/heavy-duty engine on the on-highway market. With just 925 kgs the engine can only be called lightweight. Set up as a 6-cylinder inline engine, the MBE 4000 delivers low RPM, which means more fuel efficiency, while high torque at low RPMs lets the engine take less abuse and offer up a more reliable ride. The MBE 4000 is one of the world’s most reliable engines, due to the use of the best materials and the latest technology like the DDEC VI, Detroit Diesel’s outstanding engine control system.