The biggest company in the MTU Engines business area/segment is MTU Friedrichshafen GmbH. This company supplies diesel engines and complete propulsion systems for ships, heavy agricultural and rail vehicles, industrial drive systems and onsite power generators with an output of 20 to 9,100 kilowatts.
The Magdeburg-based company SKL Motor GmbH is a German diesel engine manufacturer steeped in tradition. With its modern test stands and facilities, and benefiting from its long-term expertise SKL is now becoming the center for major overhaul and parts replacement for MTU engines and components. SKL Motor GmbH manufactures medium-speed diesel engines in the power range from 500 to 2,350kW (670 to 3,150HP).

The business area/segment Tognum Onsite Energy Systems comprises the companies Katolight Corporation, MDE Dezentrale Energiesysteme GmbH and CFC Solutions GmbH. These companies supply onsite power generators based on diesel engines, gas engines and fuel cells.

In the Tognum Components business area/segment, the brands L'Orange and Rotorion supply high-quality fuel-injection systems and propeller shafts for mid-class and premium automobiles as well as for light trucks.