Compare/Challenger MT585B vs Challenger MT645B

Challenger MT585B vs Challenger MT645B

Verdict: Challenger MT585B vs Challenger MT645B

The Challenger MT585B and the Challenger MT645B are both tractors — here is how they stack up on the figures that matter. Challenger MT645B leads on rated power with 205 hp against 200 hp. Challenger MT585B is the lighter machine (7,439 kg vs 18,308 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger MT585B is the newer design (2010 vs 2005). In short: choose the Challenger MT645B for outright pulling power, or the Challenger MT585B 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

200 hp

205 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Challenger (a part of AGCO)Reference

Pull at 4.47 KPHReference

Pull at 10 KPHReference

Steering

hydrostatic powerReference

—

Final drives

—

inboard planetaryReference

Differential lock

—

electrohydraulic front and rearReference

Trailer brakes

—

hydraulicReference

Variants

7497

similar Massey Ferguson modelReference

—

Engine

Engine (gross)

149.1 kWReference

—

Drawbar (tested)

111.3 kWReference

128.5 kWReference

Displacement

7.4 LReference

Bore/Stroke

108 x 134 mmReference

Emissions

Tier IIIReference

—

Power (gross)

149.1 kWReference

—

Maximum Power

167.8 kWReference

—

Fuel system

electronic common railReference

—

Rated RPM

2200Reference

Starter

electricReference

—

Starter volts

12Reference

Coolant capacity

34.0 LReference

33.7 LReference

Max power

111.3 kWReference

128.5 kWReference

Power at rated engine speed

134.9 kWReference

152.7 kWReference

Fuel Type

dieselReference

—

No of Cylinders

6 cylinderReference

—

Rated engine speed

2,200 RPMReference

—

Emissions compliance

Tier IIIReference

—

Bore and stroke

4.252x5.276 inchesReference

—

Cooling system

liquid-cooledReference

—

Engine

—

175.2 kWReference

Power

—

175.2 kWReference

Air cleaner

—

dual paper elementsReference

Pre-heating

—

1000W coolant heaterReference

Compression

—

17.5:1Reference

Transmission

Techstar CVTReference

TechStarReference

Gears

infinite forward and reverseReference

infinite forward and reverse (2-range)Reference

Oil capacity

52.1 LReference

67.0 LReference

Transmission Type

CVTReference

—

Wheel Drive

4WDReference

—

PTO & Hydraulics

PTO (claimed)

123.0 kWReference

149.1 kWReference

PTO (tested)

155.0 kWReference

166.2 kWReference

Hydraulic system

99.9 LReference

Type

continuously variable transmissionReference

continuously variable transmission (CVT)Reference

Capacity

99.9 LReference

Pressure

200.0 barReference

Valves

3 or 4Reference

4 to 6Reference

Total flow

147.6 lpmReference

Rear Type

IIIReference

Control

lower link draft sensingReference

—

Rear lift (at 24"/610mm)

7321 kgReference

7076 kgReference

Front Hitch

optionalReference

IIReference

Front lift

3991 kgReference

5488 kgReference

Rear PTO

independentReference

Clutch

electro-hydraulicReference

electro-hydraulic wet discReference

Rear PTO Type

540/540E/1000 (1.375)Reference

1000 (1.75)Reference

Front PTO

optionalReference

—

Front PTO Type

1000 (1.375)Reference

—

Power at rated PTO speed

152.0 kWReference

165.2 kWReference

Engine RPM

—

1000@2031Reference

Capacities

Fuel

355.8 LReference

601.8 LReference

Fuel tank

355.8 LReference

—

Dimensions

Wheelbase

299 cmReference

307 cmReference

Weight

7439 kgReference

18308 to 19595 poundsReference

Length

506 cmReference

523 cmReference

Width

299 cmReference

Height (cab)

309 cmReference

313 cmReference

Shipping weight

7439 kgReference

—

Clearance (drawbar)

40 cmReference

—

Rear axle

3048 mmReference

—

Rear tread

152 to 304 cmReference

152 to 223 cmReference

Front tire

—

380/85R34Reference

Rear tire

—

480/80R46Reference

Ag front

—

380/85R34Reference

Ag rear

—

480/80R46Reference

Ground clearance

—

56 cmReference

Bar rear axle

—

109 by 2997 mmReference

Shipping

—

8304 kgReference

Operating

—

8888 kgReference

Max Drawbar

—

2549 kgReference

Max front axle

—

4926 kgReference

Max rear axle

—

7731 kgReference

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

175Reference

150Reference

Batteries

2Reference

Battery CCA

600 (each)Reference

775Reference

Battery volts

12Reference

Total cold cranking amps

600 (each) CCAReference

—

Test results

Fuel use

42.4 l/hourReference

45.4 l/hourReference

Max pull

7876 kgReference

7690 kgReference

General

Make & Model

Challenger (a part of AGCO)Reference

—

Hydraulics

Capacity Valves

24 ValvesReference

—

Pump Rated Output (total)

39 gpmReference

—

Hydraulics Type

Closed Center Pressure Flow CompensatedReference

—

Maximum operating pressure

2,900 psiReference

—

Remote Valves

3 or 4 ValvesReference

—

Rear Hitch category (SAE designation)

Category IIIReference

—

Rear Hitch Sensing Type

lower link draft sensingReference

—

PTO

PTO Power

165 hpReference

—

Rear PTO Power

AvailableReference

—

Rear PTO RPM

1,000 RPMReference

—

Front PTO Power

AvailableReference

—

Steering & brakes

Brakes

Hydraulic wet disc brakesReference

—

Steering type

Hydrostatic PowerReference

—

Dimensions & weight

Height Over Cab

309.6 cmReference

—

Overall Length

506.7 cmReference

—

Overall Width

300 cmReference

—

Drawbar clearance

40.6 cmReference

—

Overall weight

7,438.9 kgReference

—

Wheels & tyres

Rear wheel tread range

60 to 120 inchesReference

—

Operator station

Cab Availability

AvailableReference

—

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.