Mercedes Benz U65
Built: 1963–1966 · Series: 406
More machines from model year 1963
Mercedes-Benz Unimog U65 of series 406: a water-cooled six-cylinder diesel implement carrier producing 47.6 kW (65 hp) and 200 Nm of torque, built 1963 to 1966, with a top speed of 65 km/h.
The U65 of series 406 is the larger version of the Unimog (Universal-Motor-Gerät) from Mercedes-Benz, which from 1963 replaced the smaller series 403 in the same power class. The Unimog was built at the Gaggenau plant; the model recorded here dates from 1963 to 1966.
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The U65 of series 406 is powered by a water-cooled six-cylinder diesel engine with 4,580 cm3 displacement, producing 47.6 kW (65 hp) and 200 Nm of torque at a rated speed of 2,550 rpm. At an unladen weight of 2,650 kg, a wheelbase of 2,380 mm and a width of 2,000 mm, it reaches a top speed of 65 km/h. Height and length are 2,250 mm and 4,050 mm.
The switch from the four-cylinder engine of series 403 to a six-cylinder in series 406, at the same power class, aimed at smoother running and more torque reserve for work with heavy implements on the front and rear power take-offs. Like other Unimogs of this period, the series 406 U65 was an off-road implement carrier for agriculture, works yards and municipal services, with portal axles and high ground clearance.
When buying a 1960s Unimog 406 U65, the portal axles with their reduction gearing and the front and rear power take-off couplings are the most important checks. The six-cylinder engine should be checked for compression and oil consumption, and after decades of off-road and winter-service use the frame needs a careful check for corrosion at the implement mounting points.
Sources: SpecCodex-Register: Kennwerte des Modells Mercedes-Benz Unimog U65 (406)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 65 hp (47.6 kW)correct |
| Rated speed | 2,550 rpmcorrect |
| Torque | 200 Nmcorrect |
| Speed at max. torque | 1,600 rpmcorrect |
| Cylinders | 6correct |
| Displacement | 4,580 cm³correct |
| Bore | 90 mmcorrect |
| Stroke | 120 mmcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 4,050 mmcorrect |
|---|---|
| Width | 2,000 mmcorrect |
| Height | 2,250 mmcorrect |
| Wheelbase | 2,380 mmcorrect |
| Ground clearance | 415 mmcorrect |
| Unladen weight | 2,650 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 6V/2Rcorrect |
| Front tyres | 10.5-20correct |
| Rear tyres | 10.5-20correct |
| Top speed | 65 km/hcorrect |
Working data
| Fuel tank capacity | 90 lcorrect |
|---|
Origin and approval
| Construction | frame constructioncorrect |
|---|
Other data
| Linkage category | Cat IIcorrect |
|---|
Where this model stands
Power-to-weight ratio: 18 kW/t (48 kW / 2.6 t)
Power class: Universal (40–100 hp)
Stronger than 44% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Mercedes Benz U65 have?
The Mercedes Benz U65 delivers 65 hp.
How much does the Mercedes Benz U65 weigh?
The unladen weight is 2,650 kg.
What engine does the Mercedes Benz U65 have?
6 cylinders, 4,580 cm³ displacement, Diesel.
How fast does the Mercedes Benz U65 go?
Top speed is 65 km/h.
What are the dimensions of the Mercedes Benz U65?
4,050 mm × 2,000 mm × 2,250 mm.
When was the Mercedes Benz U65 built?
Production years: 1963–1966.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 26 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.