Aebi Terratrac
Series: TT77
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Aebi TT77 (Terratrac) – Swiss carrier vehicle for mountain farming: water-cooled four-cylinder engine with 1,760 cm³ displacement, 30 kW/40 hp at 3,000 rpm and 1,325 kg unladen weight
Aebi is a Swiss manufacturer based in Burgdorf in the canton of Bern, specialising in transporters and carrier vehicles for farming on steep terrain. At Aebi, the Terratrac range stands for compact, agile machines built for work where ordinary field tractors reach their limits; the TT77 belongs to this range of small to mid-size carrier vehicles.
Read on 3 more paragraphs
The TT77 is powered by a water-cooled four-cylinder engine with 1,760 cm³ displacement, producing 30 kW or 40 hp at 3,000 rpm. The machine is 3,050 mm long, 1,900 mm wide and 1,790 mm high, has a wheelbase of 1,630 mm and an unladen weight of 1,325 kg; its design top speed is 25 km/h.
At this top speed, the TT77 falls into driving licence category L, which is sufficient for tractors up to 40 km/h. As a carrier vehicle it is built for use on steep slopes, where compact dimensions and a low centre of gravity matter more than a high road speed; diesel fuel and a comparatively simple drivetrain characterise this class of mountain tractors.
When buying one of these carrier vehicles used, check the condition of the steering knuckles and joints, the tightness of the cooling system, and the chassis and implement mounting plates for distortion from slope work; parts are supplied by agricultural machinery dealers specialising in Aebi in Switzerland and southern Germany.
Sources: SpecCodex-Register: Kennwerte des Modells Aebi Terratrac TT77, Aebi (manufacturer)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 40 hp (30 kW)correct |
| Rated speed | 3,000 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 1,760 cm³correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,050 mmcorrect |
|---|---|
| Width | 1,900 mmcorrect |
| Height | 1,790 mmcorrect |
| Wheelbase | 1,630 mmcorrect |
| Ground clearance | 210 mmcorrect |
| Unladen weight | 1,325 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | shuttle transmission 6V/6R, nicht synchronisiertcorrect |
| Front tyres | 31*15, 50-15correct |
| Rear tyres | 31*15, 50-15correct |
| Top speed | 25 km/hcorrect |
Where this model stands
Power-to-weight ratio: 22.6 kW/t (30 kW / 1.3 t)
Power class: Compact (< 40 hp)
Stronger than 26% 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 Aebi Terratrac have?
The Aebi Terratrac delivers 40 hp.
How much does the Aebi Terratrac weigh?
The unladen weight is 1,325 kg.
What engine does the Aebi Terratrac have?
4 cylinders, 1,760 cm³ displacement, Diesel.
How fast does the Aebi Terratrac go?
Top speed is 25 km/h.
What are the dimensions of the Aebi Terratrac?
3,050 mm × 1,900 mm × 1,790 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.
- 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 18 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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Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
