Bührer GM 29A
Built: 1968–1975 · Series: G („Super“)
More machines from model year 1968
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Bührer GM-29 SUPER-SIX: six-cylinder flagship of the G range, 73.5 kW (100 hp), 255 Nm torque, 2,810 kg unladen weight, built 1968 to 1975
Bührer, a Swiss tractor maker based in Hinwil in the canton of Zurich, ran the G range as a Super line alongside simpler Standard ranges such as O-Standard or M/N Standard, competing with brands such as Hürlimann and Meili. The model name SUPER-SIX names both the trim and the engine layout: the six-cylinder. The GM-29 SUPER-SIX (A) was built from 1968 to 1975.
Read on 3 more paragraphs
The engine is a water-cooled six-cylinder diesel of 5,672 cm³ displacement, producing 73.5 kW (100 hp) at 2,000 rpm and developing 255 Nm of torque. With an unladen weight of 2,810 kg, a length of 4,000 mm, a width of 1,890 mm, a height of 1,700 mm and a wheelbase of 2,500 mm, it reaches a top speed of 22 km/h.
At 22 km/h the GM-29 SUPER-SIX falls within driving licence category L up to 40 km/h. As the flagship of the G range, the six-cylinder of around 5.7 litres displacement formed the top end of Bührer's programme in those years, built for heavy tillage and draft work on larger Swiss farms rather than light yard duties.
When buying such a flagship six-cylinder second-hand, the operating hours and the condition of the injection pump, the tightness of the engine and cooling system, and wear on the clutch and gearbox matter. Rust on the cab and sheet-metal parts, together with a traceable maintenance history, give further insight into how hard this rare model has been worked, and parts usually mean searching among collectors.
Sources: SpecCodex-Register: Kennwerte des Modells Bührer GM-29 SUPER-SIX (A)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 100 hpcorrect |
| Power | 100 hpcorrect |
| Cylinders | 6correct |
| Displacement | 5,670 cm³correct |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|
Origin and approval
| Units built | 14correct |
|---|
Frequently asked questions
How much power does the Bührer GM 29A have?
The Bührer GM 29A delivers 100 hp.
What engine does the Bührer GM 29A have?
6 cylinders, 5,670 cm³ displacement, Diesel.
When was the Bührer GM 29A built?
Production years: 1968–1975.
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.
- 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 7 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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