First plans for a forward control vehicle with all-wheel
drive are made by Daimler-Benz in Berlin-Marienfelde.
Announcement of the Morgenthau Plan; Albert Friedrich
conducts the first studies on an agricultural vehicle
with all-wheel drive and forward control.
May, establishment of the criteria for building a
Unimog. August, first contacts with Erhard & Söhne.
September, first plan by Friedrich. December, Albert
Friedrich (former chief engineer of Daimler-Benz's
aircraft engine research division) started developing a
highly specialised vehicle for agriculture. His concept
was for a four-wheel drive, self locking differentials,
high ground clearance (by rigid portal axles), with power
take off at the front and rear, a small loading platform,
a driver's cab for two people, extremely low speed for
working in the fields, and with highway capability for up
to 50 km/h (30 mph). The project started in a factory at
Schwäbisch Gmünd, in southern Germany, in the Gold und
Silberfabrik Erhand & Söhne. The company had never
before been involved in making vehicles or tractors.
January, Rößler starts work at Erhard & Söhne
under Friedrich. March 6th, first concrete Unimog
concept. October, the first prototype, equipped with a
4-cylinder, 1.7 liter (103 cu. in.) gasoline engine was
complete. Still lacking in 1946 was a good quality diesel
engine and the name for this new vehicle, which was
neither a truck or a tractor. The name problem was soon
solved by Hans Zabel, an engineer with the firm. He
created an acronym from the name: UNIversal-MOtorGerät
(universal-power-unit) or UNIMOG.
Spring, the Boehringer brothers take over the Unimog
team, production and sales. Erhard & Söhne remains
the supplier for many parts. The first diesel engines are
delivered, the 25 hp Daimler-Benz OM 636, which was also
used in their 170D car. Autumn, procurement of materials
for the planned preliminary series of 100 vehicles. The
first UNIMOG saw intensive testing and the results
confirmed the concept.
Unimog is introduced at the LG-Schau (trade show)
August 29th in Frankfurt/Main. The first 150 orders.
Summer, final preparations for production of the series.
The UNIMOG team now searched for a new plant. In the
autumn of 1948 they moved to the Werkzeugmaschinenfabrik
Boehringer factory which became the new manufacturing
plant for UNIMOG. In the following two years about 600
Unimogs (U 25) were produced.
Delivery of the first Boehringer Unimog Model 70200
begins in March. When production is running, an
additional series of 500 vehicles is planned.
By autumn 1950, 600 Unimogs are built by Boehringer.
Negotiations are held in autumn about the take-over by
Daimler-Benz. Now Boehringer can manufacture machine
tools once again. The French army occupation forces in
south-western Germany ordered the first military Unimogs.
In 1950-51 they purchased 400 of the U 25 model.
In May Daimler-Benz took over the Unimog Division
from Boehringer. June 3rd , first delivery of the
Daimler-Benz Unimog Model 2010, manufactured in Gaggenau.
By July 10th the 100th Unimog had left the assembly line.
DLG Silver Medal, the association's highest award.
March, first Unimog with closed all-steel cab. Unimog
is awarded a gold medal at the
Rationalisierungsausstellung (efficiency exhibition) in
Düsseldorf. 31 July, production of Model 2010 25 PS is
discontinued. 3 August, the first Model 401 rolls off the
Unimog is the first tractor to receive the seal of
approval from the Forsttechnischen Prüfungsausschuss
(forestry technology examining board).
May, the first Unimog S with long wheel base and
modified gasoline car engine rolls off the belt. It was a
1-1/2 ton vehicle with a 2900 mm (114 in.) wheel base, 82
hp, 6-cylinder gasoline engine (2.2 liter (134 cu. in.))
from the Daimler Benz's 220 car, and a 24 volt electrical
system. Due to its portal axles the 404 had a ground
clearance of 40 cm (15.7 in.), much more than the Dodge M
37. Speed ranged from 1.5 km/h up to 95 km/h (0.9 mph to
59 mph). Unofficially some of them ran at speeds up to
110 km/h (68 mph). The fuel specification called for
regular gasoline with a minimum octane rating of 80.
Cross country the UNIMOG is unbeatable with its portal
axles, front and rear differential locks, 6 forward, 2
reverse gears, and an angle of departure of 46 degrees.
Three variations of the UNIMOG S were produced; the 404
(open cab with folding canvas), the 404.1 (closed metal
cab) and later the 404.0 (closed metal cab first launched
in 1963 as the 406 model). Typical configurations were
troop carrier, radio communications, ambulance, pioneer,
fire fighting, and snow removal.
Autumn, the ox head is replaced by a star on the bonnet.
August, engine performance is increased from 25 to 30
hp, and the series 411 appeared as a replacement for the
The Unimog is available with optional
fully-synchronised transmission. September, new closed
cab for the Unimog with long wheel base.
Unimog becomes the first agricultural tractor with
synchronised transmission as a standard feature.
May, over 50,000 Unimogs are manufactured.
The Unimog series 406 was introduced in July, the
first model in this series was the U 65.
May, the first Unimog 65 hp is ready. Unimog-based
chassis/cab became available for special vehicles.
June, the first Unimog 65 hp with direct-injection
engine is built.
Presentation of the series 416, starting with the U
Presentation of the series 421 in January, starting
with the U40. Presentation of the series 403 in April,
starting with the U 54. May, the 100,000th Unimog rolls
off the belt in Gaggenau.
Expanded range: U 34, U 45, U 54, U 66, U 80, U 90
and Unimog S for the civilian sector. Manufacture of the
series 426 under licence began in Argentina.
Presentation of the series 413 in January, starting
with the U 80. Series 431 Unimogs also manufactured under
licence in Argentina.
Overroll bar standard for the open Unimog.
The 150,000th Unimog rolls off the belt in Gaggenau
and is donated to charity.
New range: U 34, U 52, U 66, U 84 chassis with 90 hp
and 100 German standard hp. Unimog (1.5 t truck) with 82
and 110 hp gasoline engine. The MB-trac, a version of the
Unimog further developed especially for the farmer, is
Presentation of the series 425, starting with U 1300.
Unimog road tractor with 150 hp.
Expansion of the range: U 1000, change to new model
names U 800 - U 1300. Larger and more powerful than the U
404; the U1300L, which were offered to the German
Bundeswehr, had a liquid cooled, 6-cylinder, 130 hp, OM
352 diesel engine, 8 forward and 8 reverse transmission,
3250 mm (128 in.) wheel base, 440 mm (17.3 in.) ground
clearance at the portal axles, differential locks, 46
degree angle of approach, empty weight 5250 kg (11,574
lbs.), maximum loaded weight 7500 kg (16,534 lbs.), and a
In December the Bundeswehr ordered the new 2 ton trucks
at Gaggenau, named Lkw 2t tmil gl(W), Typ U 1300 L.
Beginning in August Daimler-Benz delivered 17,000 cargo
versions to the Bundeswehr. A total of 22.000 vehicles
were ordered. The 200 000th Unimog is produced in
Production of the U 404 (Unimog S) is phased out.
The 250 000th Unimog is produced.
Introduction of the Light and Medium-duty Ranges 407 and
Start of series 419 production for the US Army.
Production of the series 436 started in Aksaray, Turkey.
Complete revision of the Unimog product programme,
with introduction of the series 407, 417, 427 and 437 in
New top model U 2150.
On May 9th the new Unimog 408 (U 90) and 418 (U 110,
U 140) series were exhibited at the German
"IAA" commercial vehicle show in Hannover.
Presentation in July of the U 2400 TG heavy-load
carrier (series 437). Trials of the first three-axle
Unimog (6 x 6).
The 300 000th Unimog is produced.
On March 13th presentation of the new Unimog U 300
and U 400 series. On September 21st completion of the new
range with the U 500, shown at the commercial-vehicle
"IAA" in Frankfurt/Main.
In June 50th anniversary of the Mercedes-Benz Unimog
and open day at the DaimlerChrysler plant in Gaggenau.