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Challenger MT445B vs Challenger MT455B
Verdict: Challenger MT445B vs Challenger MT455B
The Challenger MT445B and the Challenger MT455B are both tractors — here is how they stack up on the figures that matter. Challenger MT455B leads on rated power with 80 hp against 71 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. In short: choose the Challenger MT455B for outright pulling power, or the Challenger MT445B 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
71 hp
80 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Challenger (a part of AGCO)Reference
Challenger (a part of AGCO)Reference
Four power shift gears in four ranges.Reference
Four power shift gears in four ranges.Reference
Final drives
inboard planetaryReference
inboard planetaryReference
Differential lock
electro-hydraulicReference
electro-hydraulicReference
Steering
hydrostatic powerReference
hydrostatic powerReference
Engine
Fuel tank
151.4 LReference
151.4 LReference
Engine
63.4 kWReference
70.8 kWReference
Drawbar (tested)
45.1 kWReference
49.8 kWReference
Displacement
4.4 LReference
4.4 LReference
Bore/Stroke
105 x 127 mmReference
105 x 127 mmReference
Emissions
Tier 2Reference
Tier 2Reference
Power
63.4 kWReference
70.8 kWReference
Air cleaner
dual paper elementsReference
dual paper elementsReference
Compression
17.5:1Reference
17.5:1Reference
Rated RPM
2200Reference
2200Reference
Starter volts
12Reference
12Reference
Max power
45.1 kWReference
49.8 kWReference
Power at rated engine speed
52.7 kWReference
59.8 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
Cooling system
liquid-cooledReference
liquid-cooledReference
Compression ratio
—
17.5:1Reference
Transmission
Transmission
Autopower IVReference
Autopower IVReference
Type
four speed power shiftReference
four speed power shiftReference
Gears
16 forward and reverseReference
16 forward and reverseReference
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)
52.2 kWReference
59.7 kWReference
PTO (tested)
56.6 kWReference
61.6 kWReference
ROPS Type
open centerReference
open centerReference
Cab Type
closed center load sensingReference
closed center load sensingReference
Pressure
200.0 barReference
200.0 barReference
Valves
2 to 4Reference
2 to 4Reference
Pump flow
109.8 lpmReference
109.8 lpmReference
Rear Type
IIReference
IIReference
Control
electronic top-link draft controlReference
electronic top-link draft controlReference
Rear lift (at 24"/610mm)
3304 kgReference
3304 kgReference
Rear Arms
telescopic stabilizers and link endsReference
telescopic stabilizers and link endsReference
Rear PTO
independentReference
independentReference
Clutch
wet discReference
wet discReference
Rear PTO Type
540/540E/1000/1000EReference
540/540E/1000/1000EReference
Power at rated PTO speed
54.7 kWReference
61.5 kWReference
Dimensions
Wheelbase
246 cmReference
246 cmReference
Weight
4284 kgReference
4284 kgReference
Front tire
10.00-16Reference
10.00-16Reference
Rear tire
480/70R38Reference
18.4R38Reference
Ag front
13.6R28 (4WD)Reference
14.9R28 (4WD)Reference
Ag rear
480/70R38Reference
18.4R38Reference
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Total cold cranking amps
775 CCAReference
775 CCAReference
Test results
Fuel use
18.5 l/hourReference
20.4 l/hourReference
Max pull
3937 kgReference
3957 kgReference
Capacities
Capacity
268 ciReference
268 ciReference
Hydraulics
Capacity Valves
16 valvesReference
16 ValvesReference
Hydraulics Type
open center | closed centerReference
Open CenterReference
Maximum operating pressure
2,900 psiReference
2,900 psiReference
Remote Valves
2 to 4 ValvesReference
2 to 4 ValvesReference
Rear Hitch category (SAE designation)
Category IIReference
Category IIReference
Rear Hitch Sensing Type
lower-link draft sensingReference
lower-link draft sensingReference
PTO
PTO Power
85 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
SCV control
JoystickReference
JoystickReference
Country of manufacturer
FranceReference
FranceReference
Make & Model
—
Challenger (a part of AGCO)Reference
Rear Axle Type
—
FlangeReference
Rollover protective structure
—
Two-post foldable ROPS.Reference
Dimensions & weight
Height Over Cab
275.1 cmReference
275.1 cmReference
Overall Length
426 cmReference
426 cmReference
Overall Width
255 cmReference
255 cmReference
Wheels & tyres
Rear Wheel Type
Ag : 420/85R30Reference
Ag : 420/85R30 | 420/85R30Reference
Front Wheel Type
Ag: 9.5L-15Reference
Ag : 9.5L-15 | 280/85R24Reference
Front Wheel tread range
52.2 to 80 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.