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Challenger MT645D vs Challenger MT655E
Verdict: Challenger MT645D vs Challenger MT655E
The Challenger MT645D and the Challenger MT655E are both tractors — here is how they stack up on the figures that matter. Challenger MT645D leads on rated power with 240 hp against 234 hp. Challenger MT655E is the lighter machine (10,800 kg vs 10,999 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger MT645D holds more fuel (632.2 L vs 628.3 L) for longer stints between fills. Challenger MT655E is the newer design (2014 vs 2011). In short: choose the Challenger MT645D for outright pulling power, or the Challenger MT655E if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.
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Fit & specs
Challenger
62
Fit score
Clear
Challenger
85
Fit score
Best match
Clear
Rated power
240 hp
234 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Challenger (a part of AGCO)Reference
Challenger (a part of AGCO)Reference
Pull at 4.13 KPHReference
Pull at 2.50KPHReference
Final drives
inboard planetaryReference
—
Differential lock
electro-hydraulicReference
electro-hydraulicReference
Steering
hydrostatic powerReference
hydrostatic powerReference
Trailer brakes
hydraulic (optional)Reference
—
Variants
8650
similar Massey Ferguson modelReference
—
8730
—
similar Massey Ferguson modelReference
Engine
Engine (gross)
179.0 kWReference
—
Drawbar (tested)
127.3 kWReference
162.0 kWReference
Displacement
8.4 LReference
8.4 LReference
Bore/Stroke
111 x 145 mmReference
111 x 145 mmReference
Emissions
Interim Tier IVReference
Tier IVReference
Emission control
selective catalytic reduction (SCR)Reference
selective catalytic reduction (SCR)Reference
Power (gross)
179.0 kWReference
—
Maximum Power
201.3 kWReference
220.0 kWReference
Fuel system
electronic high-pressure common railReference
—
Pre-heating
thermostartReference
—
Compression
16.7:1Reference
—
Rated RPM
2100Reference
2100Reference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Max power
127.3 kWReference
162.0 kWReference
Power at rated engine speed
161.0 kWReference
174.1 kWReference
Fuel Type
dieselReference
dieselReference
No of Cylinders
6 CylinderReference
6 CylinderReference
Rated engine speed
2,100 RPMReference
2,100 RPMReference
Emissions compliance
Interim Tier IV | selective catalytic reduction (SCR)Reference
Tier IV | selective catalytic reduction (SCR)Reference
Bore and stroke
4.370x5.709 inchesReference
4.37x5.71 inchesReference
Compression ratio
16.7:1Reference
—
Cooling system
liquid-cooledReference
liquid-cooledReference
Engine
—
197.6 kWReference
Power
—
197.6 kWReference
Transmission
Transmission
Techstar CVTReference
Techstar CVTReference
Gears
infinite forward and reverseReference
infinite forward and reverse (2-range)Reference
Transmission Type
CVTReference
CVTReference
forward and reverse options
continuously variable transmission - infinite F and infinite RReference
continuously variable transmission - infinite F and (2-range) RReference
Wheel Drive
4WDReference
4WDReference
Track Drive type
inboard planetaryReference
—
PTO & Hydraulics
PTO (claimed)
152.9 kWReference
167.8 kWReference
PTO (tested)
187.0 kWReference
195.0 kWReference
Hydraulic system
110.1 LReference
—
Type
continuously variable transmissionReference
continuously variable transmission (CVT)Reference
Capacity
110.1 LReference
512.6 ciReference
Pressure
200.0 barReference
200.0 barReference
Valves
4 to 6Reference
4 to 6Reference
SCV flow
99.9 lpmReference
—
Total flow
174.1 lpmReference
—
Rear Type
IIIReference
III/IVNReference
Rear lift
10323 kgReference
—
Front Hitch
III (optional)Reference
—
Front lift (at ends)
4989 kgReference
—
Drawbar
Cat. 4 (optional)Reference
Cat 4 (optional)Reference
Rear PTO
independentReference
independentReference
Clutch
electro-hydraulicReference
—
Rear PTO Type
540E/1000/1000E (optional)Reference
1000/1000E (1.75)Reference
Engine RPM
1000@1970Reference
—
Power at rated PTO speed
186.4 kWReference
192.9 kWReference
Pump flow
—
204.4 lpmReference
Rear lift (at ends)
—
11999 kgReference
Capacities
Fuel
632.1 LReference
—
Exhaust fluid (DEF)
60.6 LReference
59.8 LReference
Fuel tank
632.2 LReference
628.3 LReference
Diesel exhaust fluid (DEF) tank
60.6 LReference
59.8 LReference
Dimensions
Wheelbase
309 cmReference
309 cmReference
Weight
10999 kgReference
10800 kgReference
Front tire
480/70R34Reference
—
Rear tire
520/85R46Reference
—
Standard tires (ag)
Front: 480/70R34. Rear: 520/85R46Reference
—
Length
547 cmReference
555 cmReference
Height (cab)
358 cmReference
358 cmReference
Shipping weight
10999 kgReference
10800 kgReference
Max weight
15000 kgReference
—
Front axle
4WD Quadlink SuspensionReference
—
Rear axle
109 by 2997 mmReference
—
Bar rear axle
—
109 by 2997 mmReference
Electrical
Ground
negativeReference
negativeReference
Charging system
alternatorReference
alternatorReference
Charging amps
240Reference
240 (twin 120A)Reference
Batteries
2Reference
—
Battery volts
12Reference
12Reference
Charging volts
—
12Reference
Test results
Fuel use
43.5 l/hourReference
54.5 l/hourReference
Max pull
11659 kgReference
10249 kgReference
General
Make & Model
Challenger (a part of AGCO)Reference
Challenger (a part of AGCO)Reference
Drawbar category
Cat. 3Reference
Cat. 3Reference
Rear Axle Type
4.33 by 105 inchesReference
Bar: 4.33 by 105 inches | 4.33 by 118 inchesReference
Front Axle Type
4WD | 4WD Quadlink SuspensionReference
—
Country of manufacturer
USAReference
USAReference
Cruise control
—
AvailableReference
Power
Rated Power
240 hpReference
265 hpReference
PTO
PTO Power
205 hpReference
225 hpReference
Rear PTO Power
AvailableReference
AvailableReference
Rear PTO RPM
1,000 RPMReference
1,000 RPMReference
Engine Speed on Rear PTO speed
540E@1,577 RPMReference
—
Steering & brakes
Brakes
Hydraulic wet disc brakesReference
Hydraulic wet disc brakesReference
Steering type
hydrostatic powerReference
hydrostatic powerReference
Hydraulics
Pump Rated Output (total)
46 gpmReference
—
Hydraulics Type
closed center load sensing (CCLS)Reference
closed center load sensing (CCLS)Reference
Maximum operating pressure
2,900 psiReference
2,900 psiReference
Remote Valves
4 to 6 ValvesReference
4 to 6 ValvesReference
Rear Hitch category (SAE designation)
Category IIIReference
Category III/IVNReference
Rear Hitch maximum lift capacity
10,323.8 kgReference
11,999.8 kgReference
Front Hitch category (SAE designation)
Category III (optional)Reference
—
Capacity Valves
—
24 ValvesReference
Dimensions & weight
Height Over Cab
358.1 cmReference
358.1 cmReference
Overall Length
547.9 cmReference
555.2 cmReference
Overall weight
10,999.6 kgReference
10,800 kgReference
Wheels & tyres
Rear Wheel Type
520/85R46 agReference
—
Front Wheel Type
480/70R34 agReference
—
Operator station
Cab Availability
AvailableReference
AvailableReference
Seat Suspension
TRUEReference
AvailableReference
Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.