Brand siblingChallenger MT645E
The Challenger MT645E is a powerful tractor built for big farm jobs. It has a strong diesel engine made by AGCO POWER. This engine has 6 cylinders and can produce 242.6 horsepower. That's enough power to pull heavy equipment or work large fields. The MT645E has some special features that make it easy to use. It has a CVT transmission, which means it can change speeds smoothly without shifting gears. The tractor also has a comfortable cab for the driver and a hydraulic system that can lift heavy attachments. It weighs 24,670 pounds, so it's a big machine that can handle tough tasks. This Challenger tractor is good at saving fuel while working hard. It can pull up to 14,075 pounds and has a top speed of 4.92 mph when pulling heavy loads. The tractor also has a power takeoff (PTO) that can run other farm equipment. Overall, the MT645E is a strong and efficient tractor that can help farmers get a lot of work done.
Quick specs
- Category
- Agricultural
- Engine Power Output
- 243hp
- Operating Weight
- 24,670 lb
- Transmission
- Techstar CVT (Continuously Variable transmission)
At a glance
How the MT645E compares
vs. Agricultural medianDistribution
Engine Power (hp)
Across all Agricultural tractors
This model
The MT645E ranks at the 87th percentile for engine power among recorded agricultural tractors.
Overview
About the Challenger MT645E
The Challenger MT645E is a powerful tractor built for big farm jobs. It has a strong diesel engine made by AGCO POWER. This engine has 6 cylinders and can produce 242.6 horsepower. That's enough power to pull heavy equipment or work large fields. The MT645E has some special features that make it easy to use. It has a CVT transmission, which means it can change speeds smoothly without shifting gears. The tractor also has a comfortable cab for the driver and a hydraulic system that can lift heavy attachments. It weighs 24,670 pounds, so it's a big machine that can handle tough tasks. This Challenger tractor is good at saving fuel while working hard. It can pull up to 14,075 pounds and has a top speed of 4.92 mph when pulling heavy loads. The tractor also has a power takeoff (PTO) that can run other farm equipment. Overall, the MT645E is a strong and efficient tractor that can help farmers get a lot of work done.
Full specifications
Every recorded spec
General
| Manufacturer | Challenger |
|---|---|
| Model | MT645E |
| Category | Agricultural tractor |
| Operating weight | 24,670lb |
Engine
| Make | AGCO POWER |
|---|---|
| Power | 242.6hp |
| Cylinders | 6 |
| Displacement | 513ci |
| Bore | 4.37in |
| Stroke | 5.71in |
Transmission
| Type | Techstar CVT (Continuously Variable transmission) |
|---|
Chassis & drive
| Steering | Hydrostatic Power |
|---|---|
| Cab | Cab |
Hydraulics
| Type | Closed center load sensing (CCLS) |
|---|
Dimensions
| Length | 218.6in |
|---|---|
| Height | 141in |
| Operating weight | 24,670lb |
Head to head
MT645E vs. Agricultural median
How the Challenger MT645E compares to other Agricultural tractors
| Spec | This model | Agricultural median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 243 hp | 110 hp | +121% | 87th |
| Engine Displacement | 513 ci | 336 ci | +53% | 88th |
| Cylinders | 6 | 5.5 | +9% | 74th |
| Operating Weight | 24,670 lb | 10,914 lb | +126% | 91st |
| Length | 219 in | 173 in | +26% | 89th |
| Height | 141 in | 111 in | +27% | 96th |
Medians and percentiles are computed from the agricultural tractors in our database with a recorded value for each spec (sample sizes 795–1,130 models).
Compare to tractors with similar specs
Commonly compared Challenger tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Challenger MT575E | 240 hp | — | — | Compare → |
| Challenger MT645B | 235 hp | 19,595 lb | — | Compare → |
| Challenger MT655C SCR | 234 hp | 25,795 lb | — | Compare → |
| Challenger MT595D | 233.9 hp | 19,310 lb | — | Compare → |
| Challenger MT655B | 260 hp | 19,550 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| AGCO DT205B | 242.3 hp | 25,840 lb | 2009–2010 | Compare → |
| Big Bud HN250 | 250 hp | 34,000 lb | — | 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 → |
Explore
Challenger siblings
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FAQ
Common questions
How powerful is the Challenger MT645E?
The Challenger MT645E has an engine power output of 242.6 hp. It is powered by a 6-cylinder engine displacing 513 ci.
What type of transmission does the Challenger MT645E have?
The Challenger MT645E uses a Techstar CVT (Continuously Variable transmission) transmission.
What type of hydraulic system does the Challenger MT645E use?
Hydraulics on the Challenger MT645E are Closed center load sensing (CCLS).
What hitch category is the Challenger MT645E?
The Challenger MT645E uses a Category III / IVN hitch.
What is the working weight of the Challenger MT645E?
The operating weight of the Challenger MT645E is approximately 24,670 lb.
What routine service does the Challenger MT645E need?
Regular maintenance for the Challenger MT645E 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.

