The Unimog 401 is an all-wheel-drive vehicle of the Unimog-series by Mercedes-Benz, developed as a tractor and equipment carrier.

[2] After World War II, German engineer Albert Friedrich built the first Universalmotorgerät, however, Daimler-Benz declined to put it into series production.

Manufacturer Boehringer in Göppingen on the other hand was interested and produced a prototype for the 1948 DLG-exhibition in Frankfurt.

It has a U-shaped ladder frame, beam portal axles both in the rear and front, with four same-sized wheels.

It is a water-cooled naturally aspirated straight-four-diesel with precombustion chamber injection, OHV-valvetrain and a displacement of 1,767 cm3 (1.767 L; 107.8 cu in).

It has clutch-independent switchable all-wheel drive and differential locks for the front and rear axles.

[7] The 401 uses a 150 W Bosch alternator, a 12 V / 105 Ah lead-acid battery, two headlights, two rear lamps, electric trafficators, windscreen wipers and a horn.

Daimler-Benz also offered a spare wheel, rear twin tyres, a trailer-brake-system, a winch, a mowing bar and air compressors for the 401.

[7] The previous Unimog 2010 was offered as a cabrio with a foldable top, a concealing windscreen, removable side windows and a rigid rear panel.