Compare/Challenger MT425B vs Challenger MT445

Challenger MT425B vs Challenger MT445

Verdict: Challenger MT425B vs Challenger MT445

The Challenger MT425B and the Challenger MT445 are both tractors — here is how they stack up on the figures that matter. Challenger MT445 leads on rated power with 70 hp against 61 hp. Challenger MT445 is the lighter machine (6,211 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 110.1 L) for longer stints between fills. Challenger MT425B is the newer design (2004 vs 2002). In short: choose the Challenger MT445 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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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Challenger

Fit score

Best match

Clear

Challenger

Fit score

Best match

Clear

Rated power

61 hp

70 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Challenger (a part of AGCO)Reference

With 18.4R38 rear tires.Reference

Gear 2L used for pull test.Reference

Engine

55.9 kWReference

—

Drawbar (tested)

36.2 kWReference

44.9 kWReference

Displacement

4.4 LReference

4.2 LReference

Bore/Stroke

105 x 127 mmReference

103 x 127 mmReference

Emissions

Tier 2Reference

—

Power

55.9 kWReference

—

Fuel system

direct injectionReference

—

Air cleaner

dual paper elementsReference

Compression

19.3:1Reference

17.3:1Reference

Rated RPM

2200Reference

Starter volts

12Reference

Max power

36.2 kWReference

44.9 kWReference

Power at rated engine speed

45.5 kWReference

52.0 kWReference

Fuel Type

dieselReference

—

No of Cylinders

4 CylinderReference

—

Rated engine speed

2,200 RPMReference

—

Emissions compliance

Tier IIIReference

—

Bore and stroke

4.134x5.00 inchesReference

—

Compression ratio

19.3:1Reference

—

Cooling system

liquid-cooledReference

—

ROPS Fuel tank

—

110.1 LReference

Cab Fuel tank

—

189.2 LReference

Pre-heating

—

thermostartReference

Transmission

Autopower IVReference

—

Type

four speed power shiftReference

mechanical shuttleReference

Gears

16 forward and reverseReference

12 forward and reverseReference

Clutch

wet discReference

Transmission Type

PowershiftReference

—

forward and reverse options

AutoPower IV : 16 F and 16 RReference

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Wheel Drive

4WDReference

—

Rear Axle Drive Type

inboard planetaryReference

—

PTO & Hydraulics

PTO (claimed)

44.7 kWReference

48.5 kWReference

PTO (tested)

46.0 kWReference

52.0 kWReference

Rear Type

IIReference

Rear PTO Type

540/1000Reference

Power at rated PTO speed

44.5 kWReference

50.7 kWReference

Pressure

—

210.0 barReference

Valves

—

2 to 4Reference

SCV flow

—

37.9 lpmReference

Total flow

—

94.6 lpmReference

Control

—

electronic draft controlReference

Rear lift (at 24"/610mm)

—

2812 kgReference

Rear PTO

—

independentReference

Dimensions

Weight

8885 to 9515 poundsReference

6211 to 8170 poundsReference

Front tire

7.50-16Reference

12.4R24Reference

Rear tire

18.4R34Reference

13.6R38Reference

Ag front

14.9R24 (4WD)Reference

12.4R24Reference

Ag rear

18.4R34Reference

13.6R38Reference

2WD Weight

4030 kgReference

—

4WD Weight

4316 kgReference

—

Length

—

414 cmReference

Width

—

195 cmReference

Height (ROPS)

—

261 cmReference

Height (Folded ROPS)

—

198 cmReference

Height (cab)

—

254 cmReference

2WD ROPS

—

2817 kgReference

4WD ROPS

—

2969 kgReference

2WD Cab

—

3455 kgReference

4WD Cab

—

3705 kgReference

Electrical

Ground

negativeReference

Battery volts

12Reference

Total cold cranking amps

775 CCAReference

—

Charging system

—

alternatorReference

Test results

Fuel use

14.8 l/hourReference

15.1 l/hourReference

Max pull

3803 kgReference

3161 kgReference

Speeds

Capacities

Capacity

268 ciReference

—

Fuel tank

189.3 LReference

—

Hydraulics

Capacity Valves

16 valvesReference

—

Hydraulics Type

open centerReference

—

Remote Valves

2 to 4 valvesReference

—

Rear Hitch category (SAE designation)

Category IIReference

—

Rear Hitch Sensing Type

top-link draft sensingReference

—

PTO

PTO Power

65 hpReference

—

Rear PTO Power

AvailableReference

—

Rear PTO RPM

1,000 RPMReference

—

Steering & brakes

Brakes

hydraulic wet discReference

—

Steering type

powerReference

—

General

Differential lock

electro-hydraulicReference

—

SCV control

Option 1: Joystick\\nOption 2: TrueReference

—

Country of manufacturer

FranceReference

—

Dimensions & weight

Wheelbase

246.4 cmReference

236 cmReference

Height Over Cab

275.1 cmReference

—

Overall Length

420.9 cmReference

—

Overall Width

255 cmReference

—

Wheels & tyres

Rear Wheel Type

Ag : 420/85R30Reference

—

Front Wheel Type

Ag: 9.5L-15Reference

—

Front Wheel tread range

61.7 to 80.7 inchesReference

—

Operator station

Cab Availability

AvailableReference

—

Seat Suspension

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.