The serial production of the Unimog began in 1948, and in the early years, Unimogs were mainly delivered to the armies of various countries. Soon, the possibilities in agriculture were also recognized. A highlight in Unimog's agricultural history is the mention of it being the first tractor equipped with a fully synchronized gearbox in 1959.

In 1966, a new, wider Unimog series was introduced, which included the models U 34, U 40, U 54, U 70, and U 80. Two years later, the U 45, U 66, and U 90 models were introduced. The range was gradually expanded upwards: in 1969, 100 hp was reached; in 1972, 110 hp; in 1974, 120 hp; and in 1975 already 150 hp.

Distinctive features of the Unimog were its four equally sized driving wheels, suspended front and rear axles, and dry disc brakes with pneumatic assistance. A three-point hitch was available at the front and rear, and power take-offs were available at the front, rear, and center.

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