Mercedes Benz U 65
Built: 1969–1976 · Series: 403
More machines from model year 1969
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Mercedes-Benz Unimog U 65 of series 403: a water-cooled four-cylinder diesel implement carrier producing 48 kW (65 hp), built 1969 to 1976, with an unladen weight of 3,442 kg and a top speed of 70 km/h.
The U 65 belongs to the Unimog (Universal-Motor-Gerät) series 403 from Mercedes-Benz, built at the Gaggenau plant. The Unimog was designed as an off-road, multi-purpose vehicle for agriculture, construction and municipal services, with power take-offs, mounting spaces for implements and portal axles; the U 65 designation refers to this series over the period 1969 to 1976.
Read on 3 more paragraphs
The U 65 is powered by a water-cooled four-cylinder diesel engine with 3,782 cm3 displacement, producing 48 kW (65 hp) at a rated speed of 2,550 rpm. At an unladen weight of 3,442 kg, a wheelbase of 2,380 mm and a width of 2,000 mm, it reaches a top speed of 70 km/h, high for an implement carrier. Height and length are 2,330 mm and 4,050 mm.
With portal axles and high ground clearance, the Unimog of this series was built for off-road use, slopes and poor tracks, with power take-offs front and rear and mounting spaces for front, mid and rear implements. Its comparatively high road speed set it apart from classic farm tractors and also suited it to towing work over longer distances.
When buying a used Unimog U 65, the portal axles and their reduction gearing are the main check point, since oil leaks and wear in the axle hubs are common on this type of construction. Also check the front and rear power take-offs for function, the frame for corrosion after decades of off-road and winter-road, salted use, and the completeness of the mounting spaces, since missing implement brackets significantly reduce the value of an implement carrier.
Sources: SpecCodex-Register: Kennwerte des Modells Mercedes-Benz Unimog U 65 (403)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 65 hp (48 kW)correct |
| Rated speed | 2,550 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 3,782 cm³correct |
| Bore | 97 mmcorrect |
| Stroke | 128 mmcorrect |
| Injection pressure | 200 barcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 4,050 mmcorrect |
|---|---|
| Width | 2,000 mmcorrect |
| Height | 2,330 mmcorrect |
| Wheelbase | 2,380 mmcorrect |
| Ground clearance | 440 mmcorrect |
| Unladen weight | 3,442 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 6V/2Rcorrect |
| Front tyres | 10.5-20correct |
| Rear tyres | 10.5-20correct |
| Top speed | 70 km/hcorrect |
Origin and approval
| Construction | frame constructioncorrect |
|---|
Where this model stands
Power-to-weight ratio: 13.9 kW/t (48 kW / 3.4 t)
Power class: Universal (40–100 hp)
Stronger than 45% 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 U 65 have?
The Mercedes Benz U 65 delivers 65 hp.
How much does the Mercedes Benz U 65 weigh?
The unladen weight is 3,442 kg.
What engine does the Mercedes Benz U 65 have?
4 cylinders, 3,782 cm³ displacement, Diesel.
How fast does the Mercedes Benz U 65 go?
Top speed is 70 km/h.
What are the dimensions of the Mercedes Benz U 65?
4,050 mm × 2,000 mm × 2,330 mm.
When was the Mercedes Benz U 65 built?
Production years: 1969–1976.
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 22 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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Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.