Compare/Challenger MT445 vs Challenger MT455B

Challenger MT445 vs Challenger MT455B

Verdict: Challenger MT445 vs Challenger MT455B

The Challenger MT445 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 70 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 MT455B holds more fuel (151.4 L vs 110.1 L) for longer stints between fills. Challenger MT455B is the newer design (2004 vs 2002). In short: choose the Challenger MT455B for outright pulling power, or the Challenger MT445 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

Challenger

Fit score

Best match

Clear

Challenger

Fit score

Best match

Clear

Rated power

70 hp

80 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Challenger (a part of AGCO)Reference

Gear 2L used for pull test.Reference

Four power shift gears in four ranges.Reference

Final drives

—

inboard planetaryReference

Differential lock

—

electro-hydraulicReference

Steering

—

hydrostatic powerReference

Engine

ROPS Fuel tank

110.1 LReference

—

Cab Fuel tank

189.2 LReference

—

Drawbar (tested)

44.9 kWReference

49.8 kWReference

Displacement

4.2 LReference

4.4 LReference

Bore/Stroke

103 x 127 mmReference

105 x 127 mmReference

Air cleaner

dual paper elementsReference

Pre-heating

thermostartReference

—

Compression

17.3:1Reference

17.5:1Reference

Rated RPM

2200Reference

Starter volts

12Reference

Power at rated engine speed

52.0 kWReference

59.8 kWReference

Max power

44.9 kWReference

49.8 kWReference

Fuel tank

—

151.4 LReference

Engine

—

70.8 kWReference

Emissions

—

Tier 2Reference

Power

—

70.8 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

—

17.5:1Reference

Cooling system

—

liquid-cooledReference

Transmission

Gears

12 forward and reverseReference

16 forward and reverseReference

Clutch

wet discReference

Transmission

—

Autopower IVReference

Transmission Type

—

PowershiftReference

forward and reverse options

—

AutoPower IV : 16 F and 16 RReference

Wheel Drive

—

4WDReference

Rear Axle Drive Type

—

inboard planetaryReference

PTO & Hydraulics

PTO (claimed)

48.5 kWReference

59.7 kWReference

PTO (tested)

52.0 kWReference

61.6 kWReference

Type

mechanical shuttleReference

four speed power shiftReference

Pressure

210.0 barReference

200.0 barReference

Valves

2 to 4Reference

SCV flow

37.9 lpmReference

—

Total flow

94.6 lpmReference

—

Rear Type

IIReference

Control

electronic draft controlReference

electronic top-link draft controlReference

Rear lift (at 24"/610mm)

2812 kgReference

3304 kgReference

Rear PTO

independentReference

Rear PTO Type

540/1000Reference

540/540E/1000/1000EReference

Power at rated PTO speed

50.7 kWReference

61.5 kWReference

ROPS Type

—

open centerReference

Cab Type

—

closed center load sensingReference

Pump flow

—

109.8 lpmReference

Rear Arms

—

telescopic stabilizers and link endsReference

Dimensions

Wheelbase

236 cmReference

246 cmReference

Weight

6211 to 8170 poundsReference

4284 kgReference

Front tire

12.4R24Reference

10.00-16Reference

Rear tire

13.6R38Reference

18.4R38Reference

Ag front

12.4R24Reference

14.9R28 (4WD)Reference

Ag rear

13.6R38Reference

18.4R38Reference

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

Charging system

alternatorReference

—

Battery volts

12Reference

Total cold cranking amps

—

775 CCAReference

Test results

Fuel use

15.1 l/hourReference

20.4 l/hourReference

Max pull

3161 kgReference

3957 kgReference

General

Make & Model

—

Challenger (a part of AGCO)Reference

SCV control

—

JoystickReference

Rear Axle Type

—

FlangeReference

Rollover protective structure

—

Two-post foldable ROPS.Reference

Country of manufacturer

—

FranceReference

Capacities

Capacity

—

268 ciReference

Hydraulics

Capacity Valves

—

16 ValvesReference

Hydraulics Type

—

Open CenterReference

Maximum operating pressure

—

2,900 psiReference

Remote Valves

—

2 to 4 ValvesReference

Rear Hitch category (SAE designation)

—

Category IIReference

Rear Hitch Sensing Type

—

lower-link draft sensingReference

PTO

PTO Power

—

85 hpReference

Rear PTO Power

—

AvailableReference

Rear PTO RPM

—

1,000 RPMReference

Steering & brakes

Brakes

—

hydraulic wet discReference

Steering type

—

PowerReference

Dimensions & weight

Height Over Cab

—

275.1 cmReference

Overall Length

—

426 cmReference

Overall Width

—

255 cmReference

Wheels & tyres

Rear Wheel Type

—

Ag : 420/85R30 | 420/85R30Reference

Front Wheel Type

—

Ag : 9.5L-15 | 280/85R24Reference

Front Wheel tread range

—

52.2 to 80 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.