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Challenger MT425B vs Challenger MT445B
Verdict: Challenger MT425B vs Challenger MT445B
The Challenger MT425B and the Challenger MT445B are both tractors — here is how they stack up on the figures that matter. Challenger MT445B leads on rated power with 71 hp against 61 hp. Challenger MT445B is the lighter machine (8,840 kg vs 8,885 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger MT425B holds more fuel (189.3 L vs 151.4 L) for longer stints between fills. In short: choose the Challenger MT445B for outright pulling power, or the Challenger MT425B 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
Best match
Clear
Challenger
62
Fit score
Best match
Clear
Rated power
61 hp
71 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Challenger (a part of AGCO)Reference
Challenger (a part of AGCO)Reference
With 18.4R38 rear tires.Reference
Four power shift gears in four ranges.Reference
Final drives
—
inboard planetaryReference
Steering
—
hydrostatic powerReference
Engine
Engine
55.9 kWReference
63.4 kWReference
Drawbar (tested)
36.2 kWReference
45.1 kWReference
Displacement
4.4 LReference
4.4 LReference
Bore/Stroke
105 x 127 mmReference
105 x 127 mmReference
Emissions
Tier 2Reference
Tier 2Reference
Power
55.9 kWReference
63.4 kWReference
Fuel system
direct injectionReference
—
Air cleaner
dual paper elementsReference
dual paper elementsReference
Compression
19.3:1Reference
17.5:1Reference
Rated RPM
2200Reference
2200Reference
Starter volts
12Reference
12Reference
Max power
36.2 kWReference
45.1 kWReference
Power at rated engine speed
45.5 kWReference
52.7 kWReference
Fuel Type
dieselReference
dieselReference
No of Cylinders
4 CylinderReference
4 CylinderReference
Rated engine speed
2,200 RPMReference
2,200 RPMReference
Emissions compliance
Tier IIIReference
Tier IIIReference
Bore and stroke
4.134x5.00 inchesReference
4.134x5.00 inchesReference
Compression ratio
19.3:1Reference
—
Cooling system
liquid-cooledReference
liquid-cooledReference
Transmission
Transmission
Autopower IVReference
Autopower IVReference
Type
four speed power shiftReference
four speed power shiftReference
Gears
16 forward and reverseReference
16 forward and reverseReference
Clutch
wet discReference
wet discReference
Transmission Type
PowershiftReference
PowershiftReference
forward and reverse options
AutoPower IV : 16 F and 16 RReference
AutoPower IV : 16 F and 16 RReference
Wheel Drive
4WDReference
4WDReference
Rear Axle Drive Type
inboard planetaryReference
inboard planetaryReference
PTO & Hydraulics
PTO (claimed)
44.7 kWReference
52.2 kWReference
PTO (tested)
46.0 kWReference
56.6 kWReference
Rear Type
IIReference
IIReference
Rear PTO Type
540/1000Reference
540/540E/1000/1000EReference
Power at rated PTO speed
44.5 kWReference
54.7 kWReference
ROPS Type
—
open centerReference
Cab Type
—
closed center load sensingReference
Pressure
—
200.0 barReference
Valves
—
2 to 4Reference
Pump flow
—
109.8 lpmReference
Control
—
electronic top-link draft controlReference
Rear lift (at 24"/610mm)
—
3304 kgReference
Rear Arms
—
telescopic stabilizers and link endsReference
Rear PTO
—
independentReference
Dimensions
Weight
8885 to 9515 poundsReference
4284 kgReference
Front tire
7.50-16Reference
10.00-16Reference
Rear tire
18.4R34Reference
480/70R38Reference
Ag front
14.9R24 (4WD)Reference
13.6R28 (4WD)Reference
Ag rear
18.4R34Reference
480/70R38Reference
2WD Weight
4030 kgReference
—
4WD Weight
4316 kgReference
—
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Total cold cranking amps
775 CCAReference
775 CCAReference
Test results
Fuel use
14.8 l/hourReference
18.5 l/hourReference
Max pull
3803 kgReference
3937 kgReference
Speeds
Capacities
Capacity
268 ciReference
268 ciReference
Fuel tank
189.3 LReference
151.4 LReference
Hydraulics
Capacity Valves
16 valvesReference
16 valvesReference
Hydraulics Type
open centerReference
open center | closed centerReference
Remote Valves
2 to 4 valvesReference
2 to 4 ValvesReference
Rear Hitch category (SAE designation)
Category IIReference
Category IIReference
Rear Hitch Sensing Type
top-link draft sensingReference
lower-link draft sensingReference
Maximum operating pressure
—
2,900 psiReference
PTO
PTO Power
65 hpReference
85 hpReference
Rear PTO Power
AvailableReference
AvailableReference
Rear PTO RPM
1,000 RPMReference
1,000 RPMReference
Steering & brakes
Brakes
hydraulic wet discReference
hydraulic wet discReference
Steering type
powerReference
powerReference
General
Differential lock
electro-hydraulicReference
electro-hydraulicReference
SCV control
Option 1: Joystick\\nOption 2: TrueReference
JoystickReference
Country of manufacturer
FranceReference
FranceReference
Dimensions & weight
Wheelbase
246.4 cmReference
246 cmReference
Height Over Cab
275.1 cmReference
275.1 cmReference
Overall Length
420.9 cmReference
426 cmReference
Overall Width
255 cmReference
255 cmReference
Wheels & tyres
Rear Wheel Type
Ag : 420/85R30Reference
Ag : 420/85R30Reference
Front Wheel Type
Ag: 9.5L-15Reference
Ag: 9.5L-15Reference
Front Wheel tread range
61.7 to 80.7 inchesReference
52.2 to 80 inchesReference
Operator station
Cab Availability
AvailableReference
AvailableReference
Seat Suspension
TRUEReference
TRUEReference
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.