AGCO ST28a 4WD
Series: Other models
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The AGCO ST28a is a tractor from the AGCO 4WD Tractor series. The engine draws 29 hp (21.2 kW) from 1.5 litres. Rated power arrives at 2,500 rpm — the engine pulls from low down rather than needing to be revved.
Unladen, it tips the scales at 1,100 kg.
Within the range, rated power spans from 22.8 to 294 hp; with 28.8 hp, the ST28a sits at the bottom end. Directly alongside are the ST24a with 22.8 hp below and the ST33a with 33.5 hp above.
Technical data
Engine
| Power | 28.8 hp (21.2 kW)correct |
|---|---|
| Rated speed | 2,500 rpmcorrect |
| Displacement | 1,463.4 cm³correct |
| Aspiration | naturalcorrect |
Dimensions and weights
| Unladen weight | 1,100 kgcorrect |
|---|
Drivetrain and chassis
| Gearbox type | hydrostatic transmissioncorrect |
|---|---|
| Forward gears | 9correct |
| Reverse gears | 3correct |
| Tyre size | Ag R1correct |
Working data
| Pump flow | 28 l/mincorrect |
|---|
Other data
| Height | 2,051.3correct |
|---|
Where this model stands
Power-to-weight ratio: 19.3 kW/t (21 kW / 1.1 t)
Power class: Compact (< 40 hp)
Stronger than 17% of the tractors in the register — out of 15,240 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the AGCO ST28a have?
The AGCO ST28a delivers 28.8 hp.
How much does the AGCO ST28a weigh?
The unladen weight is 1,100 kg.
What engine does the AGCO ST28a have?
1,463 cm³ displacement.
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.
- 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.
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 12 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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Other models in this series
Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.