AgriculturalPerformance profile
Challenger MT645B
The Challenger MT645B is a powerful tractor built for serious farm work. It has a strong Sisu 74ETA engine with 6 cylinders and 235 horsepower. This engine is turbocharged and diesel-powered, giving it lots of muscle for tough jobs. The tractor uses a special transmission called a CVT, which means it can change speeds smoothly without shifting gears. This tractor is big and sturdy, measuring 206 inches long, 118 inches wide, and 123.6 inches tall. It weighs a hefty 19,595 pounds, which helps it stay stable during heavy work. The MT645B has large agricultural tires, with bigger ones in the back for better traction. It also has a three-point hitch in the rear, which lets it connect to many different farm tools. The hydraulic system is designed to work efficiently, helping the tractor perform various tasks with ease.
ManufacturerChallengerPower235 hpEngine6-cylTranscontinuously variable transmission (CVT)
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Quick specs
- Category
- Agricultural
- Engine Power Output
- 235hp
- Operating Weight
- 19,595 lb
- Transmission
- continuously variable transmission (CVT)
At a glance
How the MT645B compares
vs. Agricultural medianDistribution
Engine Power (hp)
Across all Agricultural tractors
235 hp · 86th
This model
13
Median 110 hp
282
This modelAgricultural tractorsMediann = 1,028
The MT645B ranks at the 86th percentile for engine power among recorded agricultural tractors.
Overview
About the Challenger MT645B
The Challenger MT645B is a powerful tractor built for serious farm work. It has a strong Sisu 74ETA engine with 6 cylinders and 235 horsepower. This engine is turbocharged and diesel-powered, giving it lots of muscle for tough jobs. The tractor uses a special transmission called a CVT, which means it can change speeds smoothly without shifting gears. This tractor is big and sturdy, measuring 206 inches long, 118 inches wide, and 123.6 inches tall. It weighs a hefty 19,595 pounds, which helps it stay stable during heavy work. The MT645B has large agricultural tires, with bigger ones in the back for better traction. It also has a three-point hitch in the rear, which lets it connect to many different farm tools. The hydraulic system is designed to work efficiently, helping the tractor perform various tasks with ease.
Full specifications
Every recorded spec
General
| Manufacturer | Challenger |
|---|---|
| Model | MT645B |
| Category | Agricultural tractor |
| Operating weight | 19,595lb |
Engine
| Make | Sisu |
|---|---|
| Model | 74ETA |
| Power | 235hp |
| Cylinders | 6 |
| Displacement | 449ci |
| Bore | 4.25in |
| Stroke | 5.28in |
Transmission
| Type | continuously variable transmission (CVT) |
|---|
Hydraulics
| Type | Pressure Flow Compensated (PFC) |
|---|
Dimensions
| Length | 206in |
|---|---|
| Width | 118in |
| Height | 123.6in |
| Operating weight | 19,595lb |
Capacities
| Cooling system | 8.9gal |
|---|
Head to head
MT645B vs. Agricultural median
How the Challenger MT645B compares to other Agricultural tractors
| Spec | This model | Agricultural median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 235 hp | 110 hp | +114% | 86th |
| Engine Displacement | 449 ci | 336 ci | +34% | 79th |
| Cylinders | 6 | 5.5 | +9% | 74th |
| Operating Weight | 19,595 lb | 10,914 lb | +80% | 82nd |
| Length | 206 in | 173 in | +19% | 82nd |
| Width | 118 in | 79.5 in | +48% | 96th |
| Height | 124 in | 111 in | +12% | 82nd |
Medians and percentiles are computed from the agricultural tractors in our database with a recorded value for each spec (sample sizes 497–1,130 models).
Compare to tractors with similar specs
Commonly compared Challenger tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Challenger MT655C SCR | 234 hp | 25,795 lb | — | Compare → |
| Challenger MT595D | 233.9 hp | 19,310 lb | — | Compare → |
| Challenger MT575E | 240 hp | — | — | Compare → |
| Challenger MT645E | 242.6 hp | 24,670 lb | — | Compare → |
| Challenger MT635B | 215 hp | 19,595 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| AGCO DT200 | 235 hp | 19,700 lb | 2002–2004 | Compare → |
| AGCO DT200A | 235 hp | 19,136 lb | 2005–2008 | Compare → |
| Belarus 7010 | 235 hp | — | — | Compare → |
| CaseIH 9230 | 235 hp | 24,106 lb | — | Compare → |
| CaseIH 9240 | 235 hp | 28,214 lb | — | Compare → |
Explore
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FAQ
Common questions
How powerful is the Challenger MT645B?
The Challenger MT645B has an engine power output of 235 hp. It is powered by a 6-cylinder engine displacing 449 ci.
What is the working weight of the Challenger MT645B?
The operating weight of the Challenger MT645B is approximately 19,595 lb.
What type of transmission does the Challenger MT645B have?
The Challenger MT645B uses a continuously variable transmission (CVT) transmission.
What hydraulics does the Challenger MT645B have?
The Challenger MT645B uses a Pressure Flow Compensated (PFC) hydraulic system.
What three-point hitch category does the Challenger MT645B use?
The Challenger MT645B has a Category III three-point hitch.
What routine service does the Challenger MT645B need?
Regular maintenance for the Challenger MT645B includes checking and changing engine oil, hydraulic fluid, and filters, plus routine inspections as recommended in the owner's manual. Always follow the manufacturer's maintenance schedule for specific intervals and procedures.