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Kubota M125GX III

Series: MGX III

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The MGX III series from Kubota includes the M125GX III. The engine delivers 133 hp (98 kW), has 4 cylinders, with a displacement of 6,124 cm³. Rated speed is 2,200 rpm. The machine is 4,460 mm long, 2,100 mm wide and 2,885 mm high. The unladen weight is 4,910 kg. The wheelbase measures 2,690 mm. Top speed is 40 km/h. The engine is water-cooled. Tyres: front 420/70R24, rear 520/70R38. The fuel is diesel. The MGX III series covers 3 models. Rated output within it ranges from 104 to 133 hp; the M125GX III sits at the top of that range with 133 hp. Its immediate neighbours are the M105GX III below it with 111 hp. Unladen weight within it ranges from 4,300 to 4,910 kg; here the M125GX III sits at the top of that range with 4,910 kg. 1112 Kubota models across 46 series are on record.

Kubota MGX III – the third generation of Kubota's big standard tractors from Japan: the M95GX III, M105GX III and M125GX III with four-cylinder diesels, 77 to 98 kW, 4.3 to 4.9 t unladen weight

Kubota, founded in 1890 in Osaka, ranks among the world's largest farm-machinery and engine makers and covers the whole span from compact tractors to big standard tractors in its range. The MGX line forms the top power class among Kubota's standard tractors; the third-generation MGX III continues the type code in which the middle number gives the power class – the M95GX III, M105GX III and M125GX III mark rising engine power on the same basic concept with a four-cylinder turbodiesel.

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The register lists here 3 versions with 77 to 98 kW output at 2,200 to 2,400 rpm, from four-cylinder diesels of 3,769 to 6,124 cm³. Unladen weights range from 4,300 to 4,910 kg, lengths from 4,305 to 4,460 mm, widths from 2,100 to 2,275 mm and heights from 2,830 to 2,885 mm; all three models run on diesel.

With the MGX line, Kubota competes in the upper power segment against European and North American standard-tractor makers; the range targets larger farms wanting to combine Kubota's reputation for reliability and dense dealer network with the power needed for large acreages.

On a used purchase, operating hours and the service history of the four-cylinder turbodiesel count, the condition of clutch and gearbox, the hydraulic system and front-loader mounting, and on newer model years the function of the exhaust aftertreatment; parts and service run through Kubota's dense dealer network.

Sources: SpecCodex register, model data: Kubota MGX III, Kubota (manufacturer)

Technical data

Engine

Fuel	dieselcorrect
Power	133 hp (98 kW)correct
Rated speed	2,200 rpmcorrect
Cylinders	4correct
Displacement	6,124 cm³correct
Cooling	water-cooledcorrect

Dimensions and weights

Length	4,460 mmcorrect
Width	2,100 mmcorrect
Height	2,885 mmcorrect
Wheelbase	2,690 mmcorrect
Unladen weight	4,910 kgcorrect

Drivetrain and chassis

Front tyres	420/70R24correct
Rear tyres	520/70R38correct
Top speed	40 km/hcorrect

Where this model stands

Power-to-weight ratio: 20 kW/t (98 kW / 4.9 t)

Power class: Large (100–180 hp)

Stronger than 79% 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 Kubota M125GX III have?

The Kubota M125GX III delivers 133 hp.

How much does the Kubota M125GX III weigh?

The unladen weight is 4,910 kg.

What engine does the Kubota M125GX III have?

4 cylinders, 6,124 cm³ displacement, Diesel.

How fast does the Kubota M125GX III go?

Top speed is 40 km/h.

What are the dimensions of the Kubota M125GX III?

4,460 mm × 2,100 mm × 2,885 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.
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 16 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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