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Mercedes Benz U 1500

Built: 1975–1988 · Series: 425

More machines from model year 1975

Source: https://www.technikboerse.com/marke/mercedes-benz-791 techn

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The U 1500 from Mercedes Benz is part of the 425 series. Production: 1975–1988. The engine delivers 150 hp (110 kW), has 6 cylinders, with a displacement of 5,675 cm³. Torque is 461 Nm. Rated speed is 2,550 rpm. The machine is 4,870 mm long, 2,300 mm wide and 2,685 mm high. The unladen weight is 5,940 kg. The wheelbase measures 2,810 mm. Ground clearance is 500 mm. Transmission: 8V / 8R. The engine is water-cooled. Tyres: front 16-70/24, rear 16-70/24. The fuel is diesel. The bore measures 97 mm. The stroke is 128 mm. Maximum torque is reached at 1,600 rpm. The gearbox offers 8 forward gears. There are also 8 reverse gears. The PTO runs at 540/1000 rpm. Around 1.790 units were built. Rated output across the Mercedes Benz range ranges from 24 to 299 hp; the U 1500 sits in the middle of that range with 150 hp. Its immediate neighbours are the MB-trac 1400 turbo below it with 136 hp and the MB trac 1600 turbo above it with 156 hp. Rated output across the Mercedes Benz range ranges from 25 to 299 hp; here the U 1500 sits in the middle of that range with 150 hp. 8330 Mercedes Benz models across 126 series are on record.

Mercedes-Benz 425 – Unimog U 120 and U 1500 from Gaggenau: a six-cylinder of 5,675 cm³, 87.8 to 110 kW (120 to 150 hp), 5,235 to 5,940 kg, torque 358 to 461 Nm, portal axles for high ground clearance

The Unimog has been built by Mercedes-Benz (Daimler-Benz) mainly at the Gaggenau plant since the early 1950s and is used as a universal implement carrier for agriculture, municipal service and forestry. The type number 425 denotes a medium Unimog series, within which the model designations U 120 and U 1500 give the approximate power class in hp. Characteristic of the Unimog are the portal axles that give high ground clearance, along with power take-offs and hydraulic couplings at front and rear for interchangeable implements.

Read on 3 more paragraphs

The register lists 2 versions with 87.8 to 110 kW (120 to 150 hp) from six-cylinder engines of 5,675 cm³, unladen weights of 5,235 to 5,940 kg, lengths of 4,750 to 4,870 mm, widths of 2,300 to 2,320 mm and heights of 2,640 to 2,685 mm; torque ranges from 358 to 461 Nm at rated speeds of 2,550 to 2,600 rpm.

Unlike pure farm tractors, a Unimog of this class is built to switch between fieldwork, road transport and implement-carrier duty, and is accordingly used as much by farmers as by municipalities and public works depots for winter service, mowing and transport work.

When buying used, check the condition of the portal axles and their seals, the operation of the front and rear PTO, the tightness of the multi-couplings for the hydraulics, rust on the frame and cab, and the tyres; parts continue to be supplied through the Mercedes-Benz and Unimog network.

Sources: SpecCodex register, model data: Mercedes-Benz 425, Unimog (Mercedes-Benz, Hersteller)

Technical data

Engine

Fuel	dieselcorrect
Power	150 hp (110 kW)correct
Rated speed	2,550 rpmcorrect
Torque	461 Nmcorrect
Speed at max. torque	1,600 rpmcorrect
Cylinders	6correct
Displacement	5,675 cm³correct
Bore	97 mmcorrect
Stroke	128 mmcorrect
Cooling	water-cooledcorrect

Dimensions and weights

Length	4,870 mmcorrect
Width	2,300 mmcorrect
Height	2,685 mmcorrect
Wheelbase	2,810 mmcorrect
Ground clearance	500 mmcorrect
Unladen weight	5,940 kgcorrect

Drivetrain and chassis

Drive	four-wheel drivecorrect
Gearbox	8V / 8Rcorrect
Forward gears	8correct
Reverse gears	8correct
Front tyres	16-70/24correct
Rear tyres	16-70/24correct
Top speed	~ 85 km/hcorrect

Origin and approval

Construction	U-Profilrahmen mit Querträgerncorrect
Units built	1,790correct

Other data

PTO speed	540/1000 rpmcorrect

Where this model stands

Power-to-weight ratio: 18.5 kW/t (110 kW / 5.9 t)

Power class: Large (100–180 hp)

Stronger than 83% 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 1500 have?

The Mercedes Benz U 1500 delivers 150 hp.

How much does the Mercedes Benz U 1500 weigh?

The unladen weight is 5,940 kg.

What engine does the Mercedes Benz U 1500 have?

6 cylinders, 5,675 cm³ displacement, Diesel.

How fast does the Mercedes Benz U 1500 go?

Top speed is 85 km/h.

What are the dimensions of the Mercedes Benz U 1500?

4,870 mm × 2,300 mm × 2,685 mm.

When was the Mercedes Benz U 1500 built?

Production years: 1975–1988.

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 28 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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