Renault 85-34 MX
Built: 2/1989–2/1993 · Series: MX-Baureihe
More machines from model year 1989
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Renault MX: the bridge to the 1990s series, around 70 hp, three- and four-cylinder diesels on the LS and RS engine base, the last numeric type range
The MX series followed the TX, RS and LS in the late 1980s and formed Renault Agriculture's last tractor generation before the introduction of the new naming family — Ceres, Temis and Ares — in the early 1990s.
Read on 4 more paragraphs
The register lists 10 live models, from the 58-12 MX to the 90-34 MX, built between 1988 and 1993. Output ranges from 39.7 to 61.1 kW, or around 70 hp, weight from 2,555 to 4,335 kg, displacement from 3,117 to 4,156 cm3, across three- and four-cylinder engines.
Technically, the MX series drew on the same engine family as the preceding LS and RS series, but combined it with reworked hydraulics and cab as a final development step before the wholesale model renewal.
The MX series thus marks the end of numeric type designations at Renault Agriculture, before the 1990s series introduced proper model names.
When buying a used MX series, clutch and gearbox condition, the tightness of the reworked lift hydraulics, and rust on cab and mudguards after decades of use matter; since the engine and displacement are identical to the LS and RS, common wear parts are widely available. Parts have run through the Claas parts network since Renault Agriculture's dissolution. PTO and three-point hitch correspond in this power class to ISO 730 Category I to II, at 540 rpm. As the category rises, the lift-arm pin diameter grows too, which can make older, lower-category implements incompatible.
Sources: SpecCodex register, model data: Renault MX-Baureihe
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 78 hp (57.4 kW)correct |
| Rated speed | 2,350 rpmcorrect |
| Torque | 258 Nmcorrect |
| Speed at max. torque | 1,300 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 4,156 cm³correct |
| Bore | 105 mmcorrect |
| Stroke | 120 mmcorrect |
| Compression ratio | 16.6correct |
| Injection pressure | 180 barcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 4,058 mmcorrect |
|---|---|
| Width | 1,929 mmcorrect |
| Height | 2,520 mmcorrect |
| Wheelbase | 2,394 mmcorrect |
| Ground clearance | 420 mmcorrect |
| Unladen weight | 3,800 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 12V/12R or 24V/24Rcorrect |
| Front tyres | 13.6 R 24 AScorrect |
| Rear tyres | 16.9 R 34 AScorrect |
| Top speed | 30 km/hcorrect |
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|---|
| Units built | 473correct |
Where this model stands
Power-to-weight ratio: 15.1 kW/t (57 kW / 3.8 t)
Power class: Universal (40–100 hp)
Stronger than 54% 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 Renault 85-34 MX have?
The Renault 85-34 MX delivers 78 hp.
How much does the Renault 85-34 MX weigh?
The unladen weight is 3,800 kg.
What engine does the Renault 85-34 MX have?
4 cylinders, 4,156 cm³ displacement, Diesel.
How fast does the Renault 85-34 MX go?
Top speed is 30 km/h.
What are the dimensions of the Renault 85-34 MX?
4,058 mm × 1,929 mm × 2,520 mm.
When was the Renault 85-34 MX built?
Production years: 2/1989–2/1993.
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.
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This page carries 26 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.