Compare/Challenger MT645C vs Challenger MT645D

Challenger MT645C vs Challenger MT645D

Verdict: Challenger MT645C vs Challenger MT645D

The Challenger MT645C and the Challenger MT645D are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 240 hp. Challenger MT645D is the lighter machine (10,999 kg vs 24,250 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger MT645D holds more fuel (632.2 L vs 590.1 L) for longer stints between fills. Challenger MT645D is the newer design (2011 vs 2009). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer 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

240 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Challenger (a part of AGCO)Reference

Pull at 4.02 KPHReference

Pull at 4.13 KPHReference

Final drives

planetaryReference

inboard planetaryReference

Differential lock

electro-hydraulic front and rearReference

electro-hydraulicReference

Steering

—

hydrostatic powerReference

Trailer brakes

—

hydraulic (optional)Reference

Variants

8650

similar Massey Ferguson modelReference

Engine

Fuel tank

690.0 LReference

632.2 LReference

Exhaust fluid (DEF)

29.9 LReference

60.6 LReference

Engine (gross)

179.0 kWReference

Drawbar (tested)

134.3 kWReference

127.3 kWReference

Displacement

8.4 LReference

Bore/Stroke

111 x 145 mmReference

Emissions

Interim Tier 4Reference

Interim Tier IVReference

Emission control

integrated exhaust gas recirculation optional (IECR)Reference

selective catalytic reduction (SCR)Reference

Power (gross)

179.0 kWReference

Maximum Power

201.3 kWReference

Fuel system

electronic high-pressure common railReference

Compression

16.7:1Reference

Rated RPM

2200Reference

2100Reference

Torque

1185.1 NmReference

—

Torque RPM

1500Reference

—

Starter

electricReference

Starter volts

12Reference

Max power

130.6 kWReference

127.3 kWReference

Power at rated engine speed

161.2 kWReference

161.0 kWReference

Fuel Type

dieselReference

No of Cylinders

6 cylinderReference

6 CylinderReference

Rated engine speed

2,200 RPMReference

2,100 RPMReference

Engine torque at rated speed

396.4 kgReference

—

Bore and stroke

4.37x5.71 inchesReference

4.370x5.709 inchesReference

Compression ratio

16.7:1Reference

Cooling system

liquid-cooledReference

Pre-heating

—

thermostartReference

Emissions compliance

—

Interim Tier IV | selective catalytic reduction (SCR)Reference

Transmission

Techstar CVTReference

Gears

infinite forward and reverseReference

Transmission Type

CVTReference

Wheel Drive

4WDReference

Rear Axle Drive Type

planetaryReference

—

forward and reverse options

—

continuously variable transmission - infinite F and infinite RReference

Track Drive type

—

inboard planetaryReference

PTO & Hydraulics

PTO (claimed)

152.9 kWReference

PTO (tested)

186.4 kWReference

187.0 kWReference

Type

continuously variable transmissionReference

Pressure

200.0 barReference

Valves

4 to 6Reference

Pump flow

99.9 lpmReference

—

Total flow

174.9 lpmReference

174.1 lpmReference

Rear Type

IIIReference

Control

electronic lower-link draft sensingReference

—

Rear lift (at ends)

12002 kgReference

—

Rear lift (at 24"/610mm)

9678 kgReference

—

Front Hitch

IIIReference

III (optional)Reference

Front lift (at ends)

4998 kgReference

4989 kgReference

Rear PTO

independentReference

Clutch

electro-hydraulicReference

Rear PTO Type

540E/1000 (1.375)Reference

540E/1000/1000E (optional)Reference

Front PTO

independentReference

—

Front PTO Type

1000 (1.375)Reference

—

Power at rated PTO speed

178.2 kWReference

186.4 kWReference

Hydraulic system

—

110.1 LReference

SCV flow

—

99.9 lpmReference

Rear lift

—

10323 kgReference

Drawbar

—

Cat. 4 (optional)Reference

Engine RPM

—

1000@1970Reference

Dimensions

Wheelbase

310 cmReference

309 cmReference

Weight

24250 to 25795 poundsReference

10999 kgReference

Front tire

480/70R34Reference

Rear tire

520/85R46Reference

Standard tires (ag)

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

Length

566 cmReference

547 cmReference

Height (cab)

338 cmReference

358 cmReference

Bar rear axle

109 by 2997 mmReference

—

Front tread

154 to 225 cmReference

—

Rear tread

148 to 303 cmReference

—

Shipping

10999 kgReference

—

Operating

11700 kgReference

—

Shipping weight

—

10999 kgReference

Max weight

—

15000 kgReference

Front axle

—

4WD Quadlink SuspensionReference

Rear axle

—

109 by 2997 mmReference

Challenger MT645C attachments

MT645C Serial Number Location

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

240Reference

Batteries

2Reference

Battery CCA

775Reference

—

Battery volts

12Reference

Battery options

2Reference

—

Total cold cranking amps

775 CCAReference

—

Capacities

Max capacity

17640 kgReference

—

Capacity

512.6 ciReference

110.1 LReference

Diesel exhaust fluid (DEF) tank

29.9 LReference

60.6 LReference

Fuel

—

632.1 LReference

Test results

Fuel use

52.2 l/hourReference

43.5 l/hourReference

Max pull

12142 kgReference

11659 kgReference

General

Make & Model

Challenger (a part of AGCO)Reference

Cruise control

AvailableReference

—

SCV control

JoystickReference

—

Rear Axle Type

BarReference

4.33 by 105 inchesReference

Country of manufacturer

FranceReference

USAReference

Drawbar category

—

Cat. 3Reference

Front Axle Type

—

4WD | 4WD Quadlink SuspensionReference

PTO

PTO Power

205 hpReference

Rear PTO Power

AvailableReference

Rear PTO RPM

1,000 RPMReference

Front PTO Power

AvailableReference

—

Engine Speed on Rear PTO speed

—

540E@1,577 RPMReference

Steering & brakes

Brakes

Hydraulic wet discReference

Hydraulic wet disc brakesReference

Steering type

PowerReference

hydrostatic powerReference

Hydraulics

Pump Rated Output (total)

46.2 gpmReference

46 gpmReference

Hydraulics Type

Closed Center Load SensingReference

closed center load sensing (CCLS)Reference

Maximum operating pressure

2,901 psiReference

2,900 psiReference

Remote Valves

4 to 6 ValvesReference

Rear Hitch category (SAE designation)

Category IIIReference

Rear Hitch maximum lift capacity

12,002 kgReference

10,323.8 kgReference

Rear Hitch Sensing Type

electronic lower-link draft sensingReference

—

Front Hitch category (SAE designation)

Category IIIReference

Category III (optional)Reference

Dimensions & weight

Height Over Cab

338.1 cmReference

358.1 cmReference

Overall Length

566.9 cmReference

547.9 cmReference

Overall weight

10,999.6 kgReference

Wheels & tyres

Rear Wheel Type

520/85R46Reference

520/85R46 agReference

Rear wheel tread range

58.5 to 119.5 inchesReference

—

Front Wheel Type

480/70R34Reference

480/70R34 agReference

Front Wheel tread range

73.1/76.9 inchesReference

—

Operator station

Cab Availability

AvailableReference

Seat Suspension

TRUEReference

Power

Rated Power

—

240 hpReference

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.