Compare/Challenger 65B vs Challenger MT645D

Challenger 65B vs Challenger MT645D

Verdict: Challenger 65B vs Challenger MT645D

The Challenger 65B and the Challenger MT645D are both tractors — here is how they stack up on the figures that matter. Challenger 65B leads on rated power with 245 hp against 240 hp. Challenger MT645D is the lighter machine (10,999 kg vs 15,436 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger 65B holds more fuel (832.7 L vs 632.2 L) for longer stints between fills. Challenger MT645D is the newer design (2011 vs 1991). In short: choose the Challenger 65B for outright pulling power, or the Challenger MT645D 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

245 hp

240 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Challenger (a part of Caterpillar)Reference

Challenger (a part of AGCO)Reference

Gear 4 used for power test.Reference

Pull at 4.13 KPHReference

Drive

crawlerReference

—

Steering

hydrostatic differential steeringReference

hydrostatic powerReference

Final drives

—

inboard planetaryReference

Differential lock

—

electro-hydraulicReference

Trailer brakes

—

hydraulic (optional)Reference

Engine

Fuel tank

832.7 LReference

632.2 LReference

Engine

212.5 kWReference

—

Drawbar (tested)

164.3 kWReference

127.3 kWReference

Displacement

10.5 LReference

8.4 LReference

Bore/Stroke

121 x 152 mmReference

111 x 145 mmReference

Power

212.5 kWReference

—

Air cleaner

dual dry elementsReference

—

Compression

15:1Reference

16.7:1Reference

Rated RPM

2100Reference

Starter volts

12Reference

Coolant capacity

41.6 LReference

—

Max power

164.3 kWReference

127.3 kWReference

Power at rated engine speed

182.8 kWReference

161.0 kWReference

Engine (gross)

—

179.0 kWReference

Emissions

—

Interim Tier IVReference

Emission control

—

selective catalytic reduction (SCR)Reference

Power (gross)

—

179.0 kWReference

Maximum Power

—

201.3 kWReference

Fuel system

—

electronic high-pressure common railReference

Pre-heating

—

thermostartReference

Starter

—

electricReference

Fuel Type

—

dieselReference

No of Cylinders

—

6 CylinderReference

Rated engine speed

—

2,100 RPMReference

Emissions compliance

—

Interim Tier IV | selective catalytic reduction (SCR)Reference

Bore and stroke

—

4.370x5.709 inchesReference

Compression ratio

—

16.7:1Reference

Cooling system

—

liquid-cooledReference

Transmission

Gears

10 forward and 2 reverseReference

infinite forward and reverseReference

Transmission

—

Techstar CVTReference

Transmission Type

—

CVTReference

forward and reverse options

—

continuously variable transmission - infinite F and infinite RReference

Wheel Drive

—

4WDReference

Track Drive type

—

inboard planetaryReference

PTO & Hydraulics

PTO (tested)

191.8 kWReference

187.0 kWReference

Type

full power shiftReference

continuously variable transmissionReference

Valves

4Reference

4 to 6Reference

Pump flow

98.4 lpmReference

—

Rear Type

III/IVReference

IIIReference

Rear lift

5157 kgReference

10323 kgReference

Rear PTO Type

1000Reference

540E/1000/1000E (optional)Reference

Power at rated PTO speed

186.5 kWReference

186.4 kWReference

PTO (claimed)

—

152.9 kWReference

Hydraulic system

—

110.1 LReference

Capacity

—

110.1 LReference

Pressure

—

200.0 barReference

SCV flow

—

99.9 lpmReference

Total flow

—

174.1 lpmReference

Front Hitch

—

III (optional)Reference

Front lift (at ends)

—

4989 kgReference

Drawbar

—

Cat. 4 (optional)Reference

Rear PTO

—

independentReference

Clutch

—

electro-hydraulicReference

Engine RPM

—

1000@1970Reference

Dimensions

Wheelbase

269 cmReference

309 cmReference

Weight

15436 kgReference

10999 kgReference

Operating weight

15436 kgReference

—

Front tire

—

480/70R34Reference

Rear tire

—

520/85R46Reference

Standard tires (ag)

—

Front: 480/70R34. Rear: 520/85R46Reference

Length

—

547 cmReference

Height (cab)

—

358 cmReference

Shipping weight

—

10999 kgReference

Max weight

—

15000 kgReference

Front axle

—

4WD Quadlink SuspensionReference

Rear axle

—

109 by 2997 mmReference

Challenger 65B Tracks

Width

52 cmReference

—

Length on ground

69 cmReference

—

Area on ground

0.0 m²Reference

—

Ground pressure

0.4 barReference

—

Test results

Fuel use

59.4 l/hourReference

43.5 l/hourReference

Max pull

—

11659 kgReference

Variants

8650

—

similar Massey Ferguson modelReference

Capacities

Fuel

—

632.1 LReference

Exhaust fluid (DEF)

—

60.6 LReference

Diesel exhaust fluid (DEF) tank

—

60.6 LReference

Electrical

Ground

—

negativeReference

Charging system

—

alternatorReference

Charging amps

—

240Reference

Batteries

—

2Reference

Battery volts

—

12Reference

General

Make & Model

—

Challenger (a part of AGCO)Reference

Drawbar category

—

Cat. 3Reference

Rear Axle Type

—

4.33 by 105 inchesReference

Front Axle Type

—

4WD | 4WD Quadlink SuspensionReference

Country of manufacturer

—

USAReference

Power

Rated Power

—

240 hpReference

PTO

PTO Power

—

205 hpReference

Rear PTO Power

—

AvailableReference

Rear PTO RPM

—

1,000 RPMReference

Engine Speed on Rear PTO speed

—

540E@1,577 RPMReference

Steering & brakes

Brakes

—

Hydraulic wet disc brakesReference

Steering type

—

hydrostatic powerReference

Hydraulics

Pump Rated Output (total)

—

46 gpmReference

Hydraulics Type

—

closed center load sensing (CCLS)Reference

Maximum operating pressure

—

2,900 psiReference

Remote Valves

—

4 to 6 ValvesReference

Rear Hitch category (SAE designation)

—

Category IIIReference

Rear Hitch maximum lift capacity

—

10,323.8 kgReference

Front Hitch category (SAE designation)

—

Category III (optional)Reference

Dimensions & weight

Height Over Cab

—

358.1 cmReference

Overall Length

—

547.9 cmReference

Overall weight

—

10,999.6 kgReference

Wheels & tyres

Rear Wheel Type

—

520/85R46 agReference

Front Wheel Type

—

480/70R34 agReference

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.