Zm „ursus” A
Series: Other models
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Ursus A: an early commercial vehicle from the Polish Zakłady Mechaniczne Ursus in Warsaw, with a 2,873 cc engine, 35 hp, a four-speed gearbox and a choice of 4x2 or 6x4 drive
Zakłady Mechaniczne Ursus, based in the Ursus district of Warsaw, was one of Poland's oldest vehicle makers and built commercial vehicles alongside tractors, including the Ursus A covered here. The series name follows the works' plain letter logic for its early designs.
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The Ursus A is powered by a 2,873 cc engine producing 35 hp (about 26 kW), paired with a four-speed-plus-reverse gearbox. It was offered with either 4x2 or 6x4 drive. At 5,115 mm long, 2,000 mm wide and 2,500 mm high, it weighs 1,540 kg, with a wheelbase of 3,500 mm.
With a comparatively light kerb weight and a choice of two or three driven axles, the Ursus A was built for straightforward passenger or light goods transport on Poland's roads of the period. The choice between 4x2 and 6x4 let it be matched to ordinary road use or tougher going.
For a vehicle this old and this rare, parts supply outside museum or club collections is practically non-existent. Preserving an example therefore comes down to the completeness and originality of the engine block, gearbox and axles, and the frame should be checked for cracking and for properly executed earlier repairs. It is also worth checking the braking system for proper function and originality, together with the wheels and tyres for a size consistent with the vehicle's original specification.
Sources: SpecCodex-Register: Kennwerte des Modells Ursus A
Technical data
Engine
| Engine | 2873 cm³, 25, 7 kW (35 KM)correct |
|---|---|
| Power | 35 hp (26.1 kW)correct |
Dimensions and weights
| Length | 5,115 mmcorrect |
|---|---|
| Width | 2,000 mmcorrect |
| Height | 2,500 mmcorrect |
| Wheelbase | 3,500 mmcorrect |
| Unladen weight | 1,540 kgcorrect |
Drivetrain and chassis
| Drive | 4×2, 6×4correct |
|---|---|
| Gearbox | 4+1correct |
Where this model stands
Power-to-weight ratio: 16.9 kW/t (26 kW / 1.5 t)
Stronger than 24% of the buses & coaches in the register — out of 34 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Zm „ursus” Ursus A have?
The Zm „ursus” Ursus A delivers 35 hp.
How much does the Zm „ursus” Ursus A weigh?
The unladen weight is 1,540 kg.
What are the dimensions of the Zm „ursus” Ursus A?
5,115 mm × 2,000 mm × 2,500 mm.
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.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- 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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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This page carries 10 individual figures for this model. They come from 4 recorded sources; 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: Wikipedia (retrieved August 2026) · How we check the data
Bus in 3D section
Turn the model, look inside and click an assembly — each one is explained.
