4×4S.ORGTHE REGISTRY NAMED MODEL · 2013
NAMED MODELSpecial · Expedition & CampersGermany

Unimog U 5023 (expedition and fire)

The UHN’s heaviest: the U 5023 since 2013 with the 5.1-litre OM 934 (231 hp), a 3,850 mm wheelbase, 14.5-tonne gross weight and 30 degrees of articulation — the chassis of most factory-built expedition trucks (Bliss Mobil, Unicat, Action Mobil), of wildfire tenders and of the Dakar support fleet.

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Sources & evidence
Unimog U 5023 (expedition and fire) — Unimog U 5023 fire tender (TLF 3000), Daun fire brigadeMeikeChristoph · CC BY-SA 4.0 ↗
BASE VEHICLEUnimog UHN all-terrain (437.4, 2002–)BUILT BYMercedes-Benz (Daimler-Benz)IN SERVICE2013PRODUCTIONNot publishedLAYOUT4 wheels · 126″

The record

The U 5023 replaced the U 5000 with the Euro VI engine and is the extreme-terrain Unimog for fire brigades, mining, disaster relief and the expedition builders who fit living cabins to it.

Research status: draft — identification, dates or figures could not all be pinned down; the summary says what is unresolved.

Specification

MANUFACTURED2013–present
ENGINE5.1-litre OM 934 diesel four, 231 hp
PRODUCTION RUNNot published
COUNTRY OF ORIGINGermany
STATUSin production
RECORD KINDNamed model
MODEL LINEUnimog
FAMILYUnimog
WHEELS4
NOMINAL WHEELBASE126″
BODY STYLEbox
CATEGORYSpecial · Expedition & Campers

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.

Variants & colours

Base model variants

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: draft