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Powertrain

The Unimog.
Unbeatable assertiveness.

No track or road is too challenging for the Unimog U 4000/U 5000. Not least thanks to its low-maintenance Mercedes-Benz 4-cylinder engines with their efficient power delivery, steep torque curve and large output reserves – so you can get going and tackle the most difficult terrain.

Engines

OM 904 LA OM 924 LA
Engine type In-line 4 In-line 4
Displacement (l) 4.250 4.800
KW 130 160
Horsepower 177 218
Max torque (Nm/rpm) 675 810

Compare Gearboxes

UG 100-8
Gearshift options
  • Telligent® gearshift, 
  • AutomaticShift (EAS),
  • Additional Working Gears
Forward gears 8
Reverse gears 6
Ratio spread 9.57 - 0.74
Transmission. </br>As versatile as you need it to be.

Transmission.
As versatile as you need it to be.

The fully synchronised electro-pneumatic Telligent® gearshift with its eight forward gears and six reverse gears stands out with its smooth running, long life span and high efficiency. It is perfectly designed to support numerous types of operations. The synchronised Electronic Quick Reverse (EQR) makes it easy to change directions quickly or to rock free when off-roading. The special off-road gear group with an additional eight forward and eight reverse gears guarantees maximum traction in the lower 1 – 15 km/h speed range.

AutomaticShift: change gears as you like.

Take the strain out of driving while operating implements or hauling heavy loads. With AutomaticShift you can decide, at the touch of a button, to use either M (for manual) or A (for automatic) gear shifting. Either way, without using the clutch. Even in automatic mode, you can intervene with the gearshift lever and change gears manually.

Mercedes-Benz engines – always ready for peak performance.

Mercedes-Benz engines – always ready for peak performance.

The low maintenance four-cylinder engines from Mercedes-Benz are state-of-the-art in every aspect, and perfectly equipped to fulfil every demand. 
Technical features include direct-injection and three-valve technology, a turbocharger and intercooler, a steep torque curve, constant output over a wide rpm range and high power reserves. The combustion-air intake is positioned on the cab roof where dust levels are lowest.

Driving and working modes – </br>engine regulation as needed.

Driving and working modes –
engine regulation as needed.

Select the proper engine mode at the push of a button to suit the job to be done. Driving mode benefits from the range of engine speeds for road trips. Working mode ensures minimal rev speed deviations.

A radiator system designed for </br>highest demands.

A radiator system designed for
highest demands.

The radiator system has been developed especially to cope with the high demands placed on the Unimog U 4000/U 5000. The intercooler and radiator, each with their own viscous fan, are fitted side by side, high above the ground. Thus the cooling performance is greatly improved and the danger of fouling is kept to a minimum – for optimum functional safety when fording. You can rely on the Unimog to get you through, even during the most demanding off-road operations involving temperature fluctuations or extreme dust.

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