[2] The engine is a 2.0 litres (1,950 cc) turbo-diesel cast aluminum block, inline four-cylinder with balancing shafts.

[3] It has a single turbo and its cylinder walls are lined with slippery Nanoslide, an iron-carbon coating that cuts friction.

Both the 200d and 220d are mated to a 9 speed torque converter transmission developed by Mercedes Benz.

[6][7] With the OM 654 M, Mercedes claims to deliver the worldwide first diesel engine with integrated starter generator.

The revised two-liter turbodiesel four-cylinder was given a new crankshaft for electrification, increasing the displacement by 43 to 1,993 cubic centimeters.