Deutz-Fahr AgroStar 8.31
Built: 1993–1995 · Series: AgroStar
More machines from model year 1993
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Deutz-Fahr AgroStar – Large-Tractor Series of the Early 1990s: Forerunner of the Agrotron, with Four- and Six-Cylinder Engines, 65 to 169.3 kW and Operating Weight from 4,150 to 8,510 kg
Deutz-Fahr built the AgroStar series from 1990 to 1997 as its then top-tier range, before the Agrotron series took over that role. According to the register, output of the recorded models ranges from 65 to 169.3 kW, with models rated in horsepower spanning 91 to 230 hp, using four- and six-cylinder engines with displacement from 4,086 to 9,572 cm³.
Read on 3 more paragraphs
Recorded operating weight runs from 4,150 to 8,510 kg, wheelbase from 2,450 to 2,972 mm, and top speed of the listed models spans 30 to 40 km/h. Model names followed a scheme combining cylinder count and power class, such as AgroStar 6.71 for a six-cylinder unit in the 70-class power band.
The AgroStar series targeted large arable farms and formed the flagship of the Deutz-Fahr range before being succeeded by the Agrotron series. Buyers of a used model should check the turbocharger and charge-air cooler, as these varied by power level.
With rated outputs from 65 to 169.3 kW, the AgroStar series falls within ISO 730 Category II to III for the rear three-point hitch, with a standard dual-speed power take-off at 540 and 1,000 revolutions per minute for heavy implements. Deutz-Fahr as a tractor brand belongs to the Italian SDF Group (SAME Deutz-Fahr), which is a separate company from the Cologne engine maker Deutz AG; both still supply spare parts for their respective ranges today.
Sources: SpecCodex register, model data: Deutz-Fahr AgroStar, Deutz-Fahr
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 230 hp (169.3 kW)correct |
| Rated speed | 2,300 rpmcorrect |
| Torque | 877 Nmcorrect |
| Speed at max. torque | 1,600 rpmcorrect |
| Cylinders | 6correct |
| Displacement | 9,572 cm³correct |
| Bore | 125 mmcorrect |
| Stroke | 130 mmcorrect |
| Injection pressure | 270 barcorrect |
| Cooling | air-cooledcorrect |
Dimensions and weights
| Length | 5,080 mmcorrect |
|---|---|
| Width | 2,440 mmcorrect |
| Height | 3,070 mmcorrect |
| Wheelbase | 2,972 mmcorrect |
| Ground clearance | 580 mmcorrect |
| Unladen weight | 8,510 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 18V / 9Rcorrect |
| Forward gears | 18correct |
| Reverse gears | 9correct |
| Front tyres | 16.9 R 30 AScorrect |
| Rear tyres | 20.8 R 42 AScorrect |
| Top speed | 40 km/hcorrect |
Working data
| Fuel tank capacity | 367 lcorrect |
|---|
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|---|
| Units built | ca. 50correct |
Other data
| Linkage category | Cat IIIcorrect |
|---|
Where this model stands
Power-to-weight ratio: 19.9 kW/t (169 kW / 8.5 t)
Power class: Heavy (> 180 hp)
Stronger than 94% 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 Deutz-Fahr AgroStar 8.31 have?
The Deutz-Fahr AgroStar 8.31 delivers 230 hp.
How much does the Deutz-Fahr AgroStar 8.31 weigh?
The unladen weight is 8,510 kg.
What engine does the Deutz-Fahr AgroStar 8.31 have?
6 cylinders, 9,572 cm³ displacement, Diesel.
How fast does the Deutz-Fahr AgroStar 8.31 go?
Top speed is 40 km/h.
What are the dimensions of the Deutz-Fahr AgroStar 8.31?
5,080 mm × 2,440 mm × 3,070 mm.
When was the Deutz-Fahr AgroStar 8.31 built?
Production years: 1993–1995.
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.
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 30 individual figures for this model. They come from 2 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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Other models in this series
AgroStar 4.68
AgroStar 4.71
AgroStar 4.78
AgroStar 6.08
AgroStar 6.11
AgroStar 6.21
AgroStar 6.28
AgroStar 6.31
AgroStar 6.38
AgroStar 6.61
AgroStar 6.71
AgroStar 6.81
Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · How we check the data
Tractor in 3D section
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