4x4s.org BASE MODEL · 2002
BASE MODELGermany

Unimog UHN all-terrain (437.4, 2002–)

The off-road Unimog since 2002: the 437.4 series UHN — U 3000, U 4000 and U 5000, from 2013 the U 4023 and U 5023 — with portal axles, coil springs, torque-tube drive, up to 30 degrees of axle articulation and the 5.1-litre OM 934, the Unimog of armies, fire brigades, disaster relief, mining and the expedition trade, and of the Dakar Rally’s truck class.

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Sources & evidence
Unimog UHN all-terrain (437.4, 2002–) — Ein für die StädteRegion Aachen bestimmter Mercedes-Benz Unimog U 5023 mit Ambulanzaufbau des Empl Fahrzeugwerks, ausgestellt auf der IAA Transportation 2026.MarcelX42 · CC BY-SA 4.0 ↗
MODEL LINEUnimogBUILT BYMercedes-Benz (Daimler-Benz)PRODUCED2002PRODUCTIONNot publishedLAYOUT4 wheels · 126″

The record

The UHN continued the 437 for the military and extreme-terrain market at Wörth with a modernised cab and drivetrain; the Bundeswehr, the Swiss, Dutch, Belgian and Australian forces and the UN run it, fire brigades use it as a wildfire tender, and the U 5023 is the chassis of most factory-built expedition trucks. Unimogs have won the truck class of the Dakar Rally and serve as its support trucks.

Specification

MANUFACTURED2002–present
ENGINE4.2-litre OM 904 and 6.4-litre OM 906 diesels; 5.1-litre OM 934 (2013–), 231 hpMercedes-Benz OM 904 · Mercedes-Benz OM 906 · Mercedes-Benz OM 934
PRODUCTION RUNNot published
COUNTRY OF ORIGINGermany
STATUSin production
RECORD KINDBase model
MODEL LINEUnimog
FAMILYUnimog
WHEELS4
NOMINAL WHEELBASE126″
BODY STYLECab with cargo body
VARIANTS3

Catalogue fields describe the vehicle's structure and body as this registry records it. They are not certified factory measurements, and no performance figures are published here.

Body styles & colours

Body style

Factory colours

  • Unimog green

Codes on hover. Hex values are representative approximations of period paint unless a source states a measured value.

AI rendering impression

An AI rendering impression starts from a 3D model of this vehicle, which an image model then paints into a scene. It is an artist's impression of the type, made to give a feel for the vehicle in its element — not a photograph, and not a record of any particular vehicle.

Proportions, fittings, markings, colours and the setting can all drift from the original in the process. For the vehicle's actual details, rely on the specification, the photographs and the cited sources on this page.

Sources

  1. 1Unimog ↗Wikipedia · accessed 2026-09-22SOURCE

Registry record updated 2026-09-22 · status: researched