Under the hood is the standard-issue Mercedes M180 straight-six gasoline engine. Displacement is 138 cubic inches (2.2 liters), and from the factory it was rated at approximately 82 horsepower. This particular engine was modified with a high-compression head from Expedition Imports, which boosts the output to approximately 96 horsepower. The engine also has a Pertronix ignition and a block heater. Unimogs use a 24-volt electrical system, and this rig has dual batteries to power the electronics.