Compare/Challenger MT445B vs Challenger MT455

Challenger MT445B vs Challenger MT455

Verdict: Challenger MT445B vs Challenger MT455

The Challenger MT445B and the Challenger MT455 are both tractors — here is how they stack up on the figures that matter. Challenger MT455 leads on rated power with 75 hp against 71 hp. Challenger MT455 is the lighter machine (6,211 kg vs 8,840 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger MT445B holds more fuel (151.4 L vs 110.1 L) for longer stints between fills. Challenger MT445B is the newer design (2004 vs 2002). In short: choose the Challenger MT455 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.

Tune the fit score

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

71 hp

75 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Challenger (a part of AGCO)Reference

Four power shift gears in four ranges.Reference

Gear 1L used for pull test.Reference

Final drives

inboard planetaryReference

—

Differential lock

electro-hydraulicReference

—

Steering

hydrostatic powerReference

—

Engine

Fuel tank

151.4 LReference

—

Engine

63.4 kWReference

—

Drawbar (tested)

45.1 kWReference

47.1 kWReference

Displacement

4.4 LReference

4.0 LReference

Bore/Stroke

105 x 127 mmReference

100 x 127 mmReference

Emissions

Tier 2Reference

—

Power

63.4 kWReference

—

Air cleaner

dual paper elementsReference

Compression

17.5:1Reference

17.3:1Reference

Rated RPM

2200Reference

Starter volts

12Reference

Max power

45.1 kWReference

47.1 kWReference

Power at rated engine speed

52.7 kWReference

56.1 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

—

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

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)

52.2 kWReference

55.9 kWReference

PTO (tested)

56.6 kWReference

58.1 kWReference

ROPS Type

open centerReference

—

Cab Type

closed center load sensingReference

—

Pressure

200.0 barReference

210.0 barReference

Valves

2 to 4Reference

Pump flow

109.8 lpmReference

—

Rear Type

IIReference

Control

electronic top-link draft controlReference

electronic draft controlReference

Rear lift (at 24"/610mm)

3304 kgReference

2812 kgReference

Rear Arms

telescopic stabilizers and link endsReference

—

Rear PTO

independentReference

Clutch

wet discReference

Rear PTO Type

540/540E/1000/1000EReference

540/1000Reference

Power at rated PTO speed

54.7 kWReference

57.8 kWReference

SCV flow

—

37.9 lpmReference

Total flow

—

94.6 lpmReference

Dimensions

Wheelbase

246 cmReference

236 cmReference

Weight

4284 kgReference

6211 to 8287 poundsReference

Front tire

10.00-16Reference

14.9R34Reference

Rear tire

480/70R38Reference

18.4R34Reference

Ag front

13.6R28 (4WD)Reference

14.9R34Reference

Ag rear

480/70R38Reference

18.4R34Reference

Length

—

414 cmReference

Width

—

205 cmReference

Height (ROPS)

—

264 cmReference

Height (Folded ROPS)

—

200 cmReference

Height (cab)

—

256 cmReference

2WD ROPS

—

2817 kgReference

4WD ROPS

—

2969 kgReference

2WD Cab

—

3508 kgReference

4WD Cab

—

3758 kgReference

Electrical

Ground

negativeReference

Battery volts

12Reference

Total cold cranking amps

775 CCAReference

—

Charging system

—

alternatorReference

Test results

Fuel use

18.5 l/hourReference

19.7 l/hourReference

Max pull

3937 kgReference

4059 kgReference

Capacities

Capacity

268 ciReference

—

Hydraulics

Capacity Valves

16 valvesReference

—

Hydraulics Type

open center | closed 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

—

General

SCV control

JoystickReference

—

Country of manufacturer

FranceReference

—

Dimensions & weight

Height Over Cab

275.1 cmReference

—

Overall Length

426 cmReference

—

Overall Width

255 cmReference

—

Wheels & tyres

Rear Wheel Type

Ag : 420/85R30Reference

—

Front Wheel Type

Ag: 9.5L-15Reference

—

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.