The Kubota M135GX is a versatile, heavy-duty agricultural tractor positioned in the upper mid-range of Kubota’s M-series. Designed to combine robust power with modern operator comforts, this model aims at farmers, contractors and municipal users who need a dependable machine for demanding fieldwork, loader duties and transport tasks. In the following sections you will find a detailed look at the tractor’s characteristics, typical applications, technical highlights and practical considerations for purchase and upkeep.
Overview and key specifications
The Kubota M135GX is commonly presented as a 135 horsepower-class tractor intended for professional use. It pairs a compact yet potent diesel engine with heavy-duty driveline and hydraulics to deliver versatility across a wide range of tasks. Exact specifications can vary by market year and optional equipment, but the M135GX typically offers the following broad characteristics:
- Power: Around 135 HP at the flywheel (gross), with PTO power usually slightly lower depending on the configuration.
- Engine: turbocharged diesel with modern fuel injection (common-rail on recent variants) and aftertreatment systems to meet emissions regulations.
- Drivetrain: 4WD with selectable front differential lock, and transmission options that can include synchronized mechanical gearing, PowrShift or hydrostatic/variable transmissions depending on the market and year.
- PTO: rear PTO with standard 540 rpm and optional 1000 rpm settings; PTO engagement via wet multi-disc clutch is common.
- Hydraulics: multiple circuit options, with hydraulic flow rates typically in the medium-to-high range for the class (commonly 90–130 L/min on implement circuits when equipped with a high-flow pump).
- Rear lift capacity: a working estimate for this class is in the region of 5,000–7,000 kg at the hitch, variable by hitch geometry and linkage choice.
- Weight and dimensions: curb weight commonly between 4,500 and 6,500 kg and wheelbase designed to balance stability and maneuverability for loader work.
- Cab: purpose-built, sound-insulated with climate control, ergonomic controls and high-visibility glazing for front loader and field work.
Design, engine and performance
Kubota designed the M135GX with the idea of balancing strong traction and drawbar power with fuel efficiency and durability. The engine is a modern, turbocharged diesel unit built for continuous heavy operation. Depending on production year and emissions standard, M135GX tractors are fitted with fuel systems and aftertreatment that meet Tier 4 Final / EU Stage IV or Stage V norms via combinations of EGR, DOC/DPF and/or SCR.
Engine characteristics
- Turbocharged with intercooler for improved efficiency and torque delivery at low RPM.
- Common-rail injection for optimized fuel delivery and cleaner combustion, helping both performance and emissions control.
- Designed for high torque at mid-range RPM to support heavy PTO and draft loads without the need to run at maximum engine speed continually.
The result is a tractor that delivers reliable pulling and PTO power while allowing operators to manage fuel consumption by operating within the engine’s optimum torque band. In everyday use this translates to consistent performance for ploughing, cultivating, baling and loader tasks with less frequent downshifts than older non-turbocharged units.
Transmission and driveline
Transmission offerings for the M135GX often include synchronized mechanical or powershift-type gearboxes, and in some markets Kubota provides advanced variable transmissions (such as KVT/CVT derivatives) for smooth speed changes and improved efficiency during transport or loader work. Key performance highlights include:
- Multiple forward and reverse speeds to match fieldwork, transport and loader needs.
- Robust rear axle and heavy-duty final drives to handle traction-intensive tasks.
- Optional creeper ranges for specialized operations like planting and horticultural applications.
Hydraulics, PTO and attachments
One of the strengths of the M135GX is its hydraulic system which supports a wide range of implements. Modern versions can be specified with high-flow hydraulic pumps and multiple remote valves, enabling complex combinations of hydraulic implements and front loaders.
PTO and linkage
- Rear PTO with selectable speeds (540 / 1000 rpm) to suit various implements from rotary mowers to balers and large seeders.
- Wet multi-disc PTO clutch for smooth engagement and long service life under heavy-duty use.
- Heavy-duty three-point hitch with category II/III compatibility on many models and substantial lift capacity to operate large mounted implements.
Common attachments and uses
Because of its square combination of power and hydraulic capacity, the M135GX pairs well with a wide variety of implements. Typical attachments include:
- Front loaders and pallet forks for material handling and bale movement.
- Ploughs, discs and cultivators for primary and secondary tillage.
- Seed drills, planters and precision seeders for medium to large farms.
- Balers, mowers and rakes for hay and forage operations.
- Spreaders, sprayers and nutrient application equipment for crop protection and fertilization.
- Snow blowers and graders for municipal and contractor use in winter maintenance.
These attachment options make the M135GX suitable for mixed farming enterprises, ag contractors and municipalities that require a single machine to perform diverse tasks across seasons.
Applications and typical use cases
The Kubota M135GX finds application in several segments where high reliability and power are required:
Arable and mixed farming
For medium to large farms focused on cereals, oilseed crops or mixed operations including livestock, the M135GX provides adequate horsepower for large seeders, cultivators and heavy ploughing. Its hydraulic and PTO capabilities support modern direct-drill and precision farming equipment.
Dairy and livestock operations
Livestock producers benefit from the M135GX’s loader capabilities for feeding, bedding management and bale handling. Strong hydraulic flow rates make quick work of front-mounted grapples and feed wagons.
Contractors and municipal work
Contractors who require a single powerful machine to perform transport, loader work, turf care and winter maintenance will appreciate the tractor’s versatility and dealer-backed support network. Municipalities can use the M135GX for roadside mowing, snow removal and public works tasks.
Cab, ergonomics and operator comfort
Modern Kubota cabs focus on long-day comfort and operational efficiency. The M135GX cabin typically includes:
- Sound insulation and vibration damping for reduced operator fatigue during long shifts.
- Climate control (air conditioning and heated options) for all-season comfort.
- High-visibility glazing and well-positioned mirrors for safe loader and field operations.
- Ergonomic controls, an adjustable seat and intuitive layouts that speed training and reduce strain.
- Optional technology packages such as GPS-ready consoles and task controllers for precision farming integration.
These features make the tractor attractive for operators who spend long hours in the cab and for businesses that value productivity linked to operator wellbeing.
Maintenance, reliability and emissions
Kubota’s reputation for durable engines and reliable service is a key selling point. The M135GX is designed with accessibility and routine maintenance in mind:
- Easy access to service points such as filters, oil fill and cooling system for routine checks.
- Modular components and widely available parts through Kubota’s dealer network.
- Engine aftertreatment systems (DOC/DPF, and/or SCR) designed to meet emissions regulations while minimizing downtime when properly maintained.
Regular maintenance including fuel, oil and filter changes, as well as DPF regeneration strategies (if equipped), ensures longevity and helps maintain fuel efficiency. Operators should follow the manufacturer’s intervals for inspections of the cooling system, hydraulics and driveline to avoid costly repairs.
Buying considerations and market position
When evaluating the M135GX for purchase, consider the following:
- Intended tasks: match PTO, hydraulic flow and rear linkage capacity to your heaviest implements.
- Transmission choice: powershift or variable transmissions add convenience for transport and loader work but can increase initial cost and complexity.
- Fuel and emissions equipment: later-stage emissions systems provide environmental benefits and compliance, and may influence maintenance routines.
- Dealer support and resale: Kubota’s widespread dealer network and brand recognition often contribute to strong resale values and easier parts sourcing.
Competitors in the 120–160 HP range include models from John Deere (6-series), New Holland (T6), Case IH (Farmall/Maxxum), and Claas (Arion). Kubota often differentiates itself with compact design, operator-focused features and a reputation for engine durability.
Operational tips and safety
To get the most out of the M135GX while protecting personnel and equipment, follow these practical recommendations:
- Adhere to the operator manual for hitching procedures, PTO engagement and hydraulic connections.
- Use the correct hydraulic oils and follow scheduled filter changes to protect pumps and control valves.
- Check tire pressures and ballast for optimum traction and to prevent slippage during heavy draft work.
- When operating front loaders, keep heavy loads low and use appropriate counterweight or rear ballast where necessary.
- Schedule regular inspections of brake systems, lights and safety interlocks; inspect DPF and SCR components if equipped.
Statistics, availability and resale considerations
Concrete production and sales numbers for specific tractor models like the M135GX are typically held by manufacturers and vary by region and model year. However, some general market observations can be offered:
- Kubota consistently places among the top global tractor brands by unit sales, with particularly strong market share in Asia, Europe and North America for compact and mid-size tractors.
- Midsize tractors in the 120–150 HP segment represent a significant portion of weekday contractor and larger farm purchases, because they offer a balance between power and operating cost.
- Resale values for reputable models such as those in the Kubota M-series tend to remain competitive in used equipment markets, especially when machines have documented service histories and low-hour examples are available.
Because exact numerical statistics (such as total units sold by year for the M135GX) are not typically published in full detail by manufacturers, prospective buyers seeking precise production and regional sales figures should consult Kubota dealers or corporate sales reports for the most accurate data.
Conclusion and final thoughts
The Kubota M135GX is a purpose-built tractor for demanding agricultural and contracting roles. With robust engine performance, adaptable hydraulics and modern operator comforts, it is aimed at users who need a single machine that can handle heavy draft, loader and PTO work across seasons. Key selling points include the reputable Kubota engineering, a focus on reliability, and a broad dealer network for parts and service. When evaluating the M135GX, match spec options—transmission type, hydraulic flow, PTO speeds and cab packages—to your most frequent tasks to ensure you get maximum value for your investment.
