Challenger MT645 Specs, Price and Review (2026)
Agricultural · 180 HP · Best for versatility and fuel efficiency
Power
180 HP (134.2 kW)
Fuel
Diesel
Transmission
Manual
PTO
153 HP @ 540 rpm
Weight
8,618 kg (9 t)
New price (est.)
$103,680 – $155,520
Est. used price
$36,288 – $108,864
Overview
The Challenger MT645 is a 180 HP agricultural tractor built for large-acreage farming, heavy tillage, and large-implement compatibility. The Challenger tractor lineup is known for durability, and the MT645 is no exception. This page provides detailed Challenger MT645 specifications — engine, transmission, PTO, hydraulics, weight, and dimensions — sourced from manufacturer technical data. Whether you need a MT645 review for a purchase decision or a trade-in comparison, this page covers performance analysis and suitability scoring. For Challenger MT645 price guidance, we provide new price estimates and used market ranges so you can budget accurately before contacting a dealer. Compare the Challenger MT645 with similar tractors using the links below, or use our TractorFit™ analysis to see how it scores for your specific operation.
TractorFit™ Analysis
Overall score
Based on specs and use-case fit for Challenger MT645.
This model sits in the high-power class for producers who need strong PTO and hydraulic performance. Manual transmission keeps ownership costs down and is well understood for maintenance. Farm-oriented design prioritizes drawbar and PTO work, hydraulics, and durability. PTO specs determine compatibility with mowers, balers, and other powered attachments. Key specs include 180 HP, 153 HP PTO, 9 t operating weight, estimated used range $36,288–$108,864, and overall suitability 47/100.
Higher = simpler
Pros
- ✓Simple maintenance; mechanical transmission with lower repair costs.
- ✓High versatility: PTO and hydraulic options for multiple implements.
- ✓High power for heavy fieldwork and demanding equipment.
- ✓Reliable manual transmission with low maintenance cost.
Cons
- •May be excessive in size and fuel use for very small farms.
- •Limited capacity for intensive loader work.
- •Modest power-to-weight ratio; less agility in traction and on slopes.
- •Premium price segment relative to power and specification level.
Challenger MT645 receives an overall suitability score of 47/100 from the TractorSuitability™ Engine. mixed use with multiple PTO and hydraulic implements. The suitability sub-scores allow an objective comparison of performance across farm sizes and use types. Loader work rates 31/100; fuel efficiency index is 67/100. Maintenance is classified as Low: Mechanical transmission and straightforward engine design; lower repair costs and easier DIY or general dealer servicing. Operating cost tier is Moderate: Reasonable fuel efficiency and maintenance; operating costs are in line with the power class. Versatility (71/100) reflects PTO and hydraulic options; cost tier (39/100) reflects value for money. It has relative limitations in: small farm, large farm, loader. Overall, it offers a specialized profile for its class. The TractorSuitability™ Engine uses manufacturer technical data only to compute these indices in an objective, reproducible way. We recommend comparing these scores with your specific acreage, crop type, and implement needs before deciding.
Real-world performance & ownership
Highlights
- High horsepower supports large implements and high capacity.
- Manual transmission keeps design simple and ownership costs lower.
- Operating weight around 9 t supports traction and ballast for heavy implements.
- Rated PTO output of 153 HP supports mowers, hay tools, and other driven implements.
- Versatility index supports a wide range of tasks and attachments.
- Estimated used price range: $36,288–$108,864 USD.
- Farm orientation targets fieldwork, PTO work, and reliability.
Trade-offs
- Maintenance complexity is rated on the higher side; factor in service access and parts availability.
- Loader and front attachment suitability is limited by design; best for lighter loader duties.
Best for
- Heavy tillage and large hay
- High-capacity harvesting
- Large-acreage farming
- Mixed tasks and attachment use
Not ideal for
- Heavy, continuous loader work
- Low-maintenance-first buyers
Challenger MT645 — Pros and Cons
Pros
- High horsepower supports large implements and high capacity.
- Manual transmission keeps design simple and ownership costs lower.
- Operating weight around 9 t supports traction and ballast for heavy implements.
- Rated PTO output of 153 HP supports mowers, hay tools, and other driven implements.
- Versatility index supports a wide range of tasks and attachments.
- Estimated used price range: $36,288–$108,864 USD.
- Farm orientation targets fieldwork, PTO work, and reliability.
Cons
- Maintenance complexity is rated on the higher side; factor in service access and parts availability.
- Loader and front attachment suitability is limited by design; best for lighter loader duties.
Used market insights
Estimated used price
$36,288 – $108,864 USD
High confidence
Estimate only. Actual prices vary by condition, hours, and region.
Buyer checklist
- Check engine and PTO hours; service history matters for long-term reliability.
- Confirm PTO speed (540/1000) and HP match your mowers, balers, or other implements.
- Inspect hydraulics and three-point hitch condition; repair costs can be high.
For used Challenger MT645, hours and service history matter. Confirm PTO and hydraulic operation, tire condition, and that implements match your HP and category.
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Authorized dealerships selling and servicing Challenger tractors.
Challenger MT645 Videos
Community Discussions
Technical Specifications
What this means: Cylinder count and displacement affect smoothness and repair complexity; compare to similar models in the same HP band.
Engine
- Maximum Power (Gross)
- 180 HP (134.2 kW)
- Fuel Type
- Diesel
- Cooling
- Liquid
Compare with similar models
Better Alternatives
Frequently asked questions
Where can I find used Challenger MT645 listings?
This page links to international marketplaces where you can search for used Challenger MT645 tractors; listings are provided by third parties.
How much does a used Challenger MT645 cost?
Used Challenger MT645 tractors are often listed in the range of $36,288–$108,864 USD (high confidence). Actual prices depend on hours, condition, and region.
Does the Challenger MT645 have a PTO?
Yes. The Challenger MT645 has a rear PTO rated at 153 HP at 540 rpm.
What is the horsepower of the Challenger MT645?
The Challenger MT645 is rated at 180 HP (gross) (134.2 kW).
Is the Challenger MT645 good for loader work?
TractorFit scores rate this model as less suited for loader work (31/100). Check front axle capacity and loader compatibility for your intended use.
What is the Challenger MT645 best used for?
As a farm tractor, the Challenger MT645 is suited to fieldwork, PTO-driven implements, hay work, and general estate or small-farm tasks.
What type of transmission does the Challenger MT645 have?
The Challenger MT645 uses a manual transmission.
What should I check when buying a used Challenger MT645?
Verify hours, condition, service history, PTO operation, hydraulics, and tire wear. Confirm weight and dimensions if you need to transport or match implements.
What fuel does the Challenger MT645 use?
The Challenger MT645 uses diesel fuel.
What is the weight of the Challenger MT645?
Operating weight is approximately 8,618 kg (9 tons).
Challenger MT645: Complete Tractor Specifications and Technical Data
Overview
The Challenger MT645 is a agricultural tractor from Challenger designed for agricultural operations. This comprehensive tractor specifications guide provides complete technical data, engine specifications, transmission details, dimensions, and hydraulic system capabilities. This agricultural tractor features a 180 HP diesel engine with manual transmission, delivering reliable performance. Our tractor database provides detailed specifications and technical data for the Challenger MT645, making it easy to compare with other models in the Challenger lineup or across different brands.
Engine Specifications
The Challenger MT645 is powered by a diesel engine that delivers 180 HP for agricultural tasks. Tractor horsepower is a critical specification that determines the machine's ability to handle various implements. The engine specifications demonstrate Challenger's engineering expertise in creating efficient powerplants.
- Maximum Power: 180 HP (134.2 kW)
- Fuel Type: Diesel
- Cooling System: Liquid-cooled
Transmission Specifications
The Challenger MT645 features a manual transmission system. Transmission type affects power delivery and operational efficiency. Different transmission types offer various advantages for different operating conditions and implement requirements.
Dimensions and Weight
Understanding tractor dimensions and weight is essential for storage, transport, and operational compatibility. The Challenger MT645's specifications help determine if the tractor fits your operational requirements.
- Wheelbase: 3073 mm (121.0 in)
- Weight: 8618 kg (18.999 lbs)
Power Take-Off (PTO)
The PTO system allows the tractor to transfer engine power to driven implements. PTO specifications, including horsepower and speed ratings, are essential when selecting implements.
- PTO Speed: 540 rpm
- PTO Power: 153 HP (114 kW)
Performance and Applications
The Challenger MT645 delivers 180 HP performance for agricultural applications including plowing, planting, and harvesting. Tractor performance metrics, including power output, hydraulic capabilities, and dimensions, determine the machine's suitability for various tasks. When evaluating tractor performance, consider your specific application requirements, operating conditions, and implement needs to ensure the Challenger MT645 matches your operational demands.
Technical Data Summary
This guide provides complete technical data and detailed specifications for the Challenger MT645. Key specifications include: 180 HP engine, manual transmission, 153 HP PTO, and 8618 kg weight. These tractor specifications enable accurate comparisons with other models. Our tractor database provides comprehensive data for thousands of models, making it easy to research specifications and compare tractors.
Conclusion
The Challenger MT645 is a reliable agricultural tractor from Challenger, designed for modern farming operations. With its 180 HP diesel engine and manual transmission, weighing 9 tons, it provides dependable performance for agricultural tasks. This comprehensive guide offers all essential Challenger MT645 tractor data and specifications for informed decision-making.
Conclusion
With 180 HP, the Challenger MT645 is a model worth considering carefully for operators who need Heavy tillage and large hay, High-capacity harvesting, Large-acreage farming. Check the price range shown above and compare with similar models to ensure it fits your budget. Use our comparison tool to stack the MT645 against other tractors in the same HP range before making a final decision.