Unimog 403

The Unimog Series 403 is a versatile all-terrain vehicle manufactured by Mercedes-Benz. It was produced from 1963 to 1989 and is considered one of the most successful Unimog series. The Unimog 403 is a multi-purpose vehicle that can be used for various tasks, including transportation, construction, and agriculture.


The Unimog 403 was built with a 2.8-liter, four-cylinder diesel engine that produced 65 horsepower. It had a top speed of 52 mph and a payload capacity of up to 3.5 tons. The Unimog 403 had a three-point mounting system that made it easy to attach different types of equipment.

Production Dates and Units Manufactured

The Unimog 403 was produced from 1963 to 1989. During this time, approximately 13,000 units were manufactured.

Dimensions and Wheelbase

The Unimog 403 had a wheelbase of 2,380 mm and a length of 4,850 mm. It was 2,120 mm wide and 2,320 mm tall.


The Unimog 403 had several models, including:

  • U 65/403 – The base model with an open cab
  • U 70/403 – A version with a closed cab
  • U 80/403 – A model with a higher payload capacity and larger tires
  • U 84/403 – A version with a winch and a higher payload capacity

Competitive Advantages

The Unimog 403 had several competitive advantages over other vehicles in its class, including:

  • All-wheel drive – The Unimog 403 had all-wheel drive, making it suitable for all types of terrain.
  • Flexibility – The Unimog 403 could be equipped with a wide range of tools and equipment, making it suitable for various tasks.
  • Reliability – The Unimog 403 was known for its durability and reliability.


The Unimog 403 was an improvement over the previous model, the Unimog 404. The 403 had a more powerful engine, improved suspension, and a more comfortable cab. It also had a higher payload capacity and was more fuel-efficient than its predecessor.


The Unimog 403 was used for various tasks, including:

  • Transportation of goods and people
  • Construction work
  • Agricultural tasks
  • Military applications


The Unimog 403 was sold in several countries, including Germany, the United States, and the United Kingdom. It was also sold in other parts of Europe, as well as in Asia and Africa.