Compare/Challenger MT645C vs Challenger MT735

Challenger MT645C vs Challenger MT735

Verdict: Challenger MT645C vs Challenger MT735

The Challenger MT645C and the Challenger MT735 are both tractors — here is how they stack up on the figures that matter. Challenger MT645C leads on rated power with 240 hp against 235 hp. Challenger MT735 is the lighter machine (12,784 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 MT645C holds more fuel (590.1 L vs 446.6 L) for longer stints between fills. Challenger MT645C is the newer design (2009 vs 2002). In short: choose the Challenger MT645C for outright pulling power, or the Challenger MT735 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

Clear

Challenger

Fit score

Best match

Clear

Rated power

240 hp

235 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Challenger (a part of AGCO)Reference

CaterpillarReference

Pull at 4.02 KPHReference

Gear 2 used for pull test.Reference

Final drives

planetaryReference

—

Differential lock

electro-hydraulic front and rearReference

—

Drive

—

crawlerReference

Steering

—

electro-hydraulicReference

Variants

8650

similar Massey Ferguson modelReference

—

Engine

Fuel tank

690.0 LReference

787.3 LReference

Exhaust fluid (DEF)

29.9 LReference

—

Engine (gross)

179.0 kWReference

175.2 kWReference

Drawbar (tested)

134.3 kWReference

119.6 kWReference

Displacement

8.4 LReference

8.8 LReference

Bore/Stroke

111 x 145 mmReference

112 x 149 mmReference

Emissions

Interim Tier 4Reference

—

Emission control

integrated exhaust gas recirculation optional (IECR)Reference

—

Power (gross)

179.0 kWReference

175.2 kWReference

Maximum Power

201.3 kWReference

—

Fuel system

electronic high-pressure common railReference

—

Compression

16.7:1Reference

16.0:1Reference

Rated RPM

2200Reference

2100Reference

Torque

1185.1 NmReference

—

Torque RPM

1500Reference

—

Starter

electricReference

—

Starter volts

12Reference

Max power

130.6 kWReference

119.6 kWReference

Power at rated engine speed

161.2 kWReference

139.2 kWReference

Fuel Type

dieselReference

—

No of Cylinders

6 cylinderReference

—

Rated engine speed

2,200 RPMReference

—

Engine torque at rated speed

396.4 kgReference

—

Bore and stroke

4.37x5.71 inchesReference

—

Compression ratio

16.7:1Reference

—

Cooling system

liquid-cooledReference

—

Drawbar (claimed)

—

132.7 kWReference

Air cleaner

—

dual paper elementsReference

Transmission

Techstar CVTReference

—

Gears

infinite forward and reverseReference

30 forward and 8 reverseReference

Transmission Type

CVTReference

—

Wheel Drive

4WDReference

—

Rear Axle Drive Type

planetaryReference

—

PTO & Hydraulics

PTO (claimed)

152.9 kWReference

138.0 kWReference

PTO (tested)

186.4 kWReference

160.8 kWReference

Type

continuously variable transmissionReference

creeperReference

Pressure

200.0 barReference

Valves

4 to 6Reference

Pump flow

99.9 lpmReference

—

Total flow

174.9 lpmReference

164.6 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

—

Front lift (at ends)

4998 kgReference

—

Rear PTO

independentReference

Clutch

electro-hydraulicReference

hydraulic wet discReference

Rear PTO Type

540E/1000 (1.375)Reference

1000 (1.75)Reference

Front PTO

independentReference

—

Front PTO Type

1000 (1.375)Reference

—

Power at rated PTO speed

178.2 kWReference

149.6 kWReference

Rear lift

—

7257 kgReference

Dimensions

Wheelbase

310 cmReference

243 cmReference

Weight

24250 to 25795 poundsReference

12784 kgReference

Front tire

480/70R34Reference

—

Rear tire

520/85R46Reference

—

Standard tires (ag)

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

—

Length

566 cmReference

—

Height (cab)

338 cmReference

—

Bar rear axle

109 by 2997 mmReference

4064 mmReference

Front tread

154 to 225 cmReference

—

Rear tread

148 to 303 cmReference

—

Shipping

10999 kgReference

—

Operating

11700 kgReference

—

Gauge

—

304 to 406 cmReference

Challenger MT645C attachments

MT645C Serial Number Location

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

240Reference

160Reference

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

—

Diesel exhaust fluid (DEF) tank

29.9 LReference

—

Test results

Fuel use

52.2 l/hourReference

42.8 l/hourReference

Max pull

12142 kgReference

11884 kgReference

General

Make & Model

Challenger (a part of AGCO)Reference

—

Cruise control

AvailableReference

—

SCV control

JoystickReference

—

Rear Axle Type

BarReference

—

Country of manufacturer

FranceReference

—

PTO

PTO Power

205 hpReference

—

Rear PTO Power

AvailableReference

—

Rear PTO RPM

1,000 RPMReference

—

Front PTO Power

AvailableReference

—

Steering & brakes

Brakes

Hydraulic wet discReference

—

Steering type

PowerReference

—

Hydraulics

Pump Rated Output (total)

46.2 gpmReference

—

Hydraulics Type

Closed Center Load SensingReference

—

Maximum operating pressure

2,901 psiReference

—

Remote Valves

4 to 6 ValvesReference

—

Rear Hitch category (SAE designation)

Category IIIReference

—

Rear Hitch maximum lift capacity

12,002 kgReference

—

Rear Hitch Sensing Type

electronic lower-link draft sensingReference

—

Front Hitch category (SAE designation)

Category IIIReference

—

Dimensions & weight

Height Over Cab

338.1 cmReference

—

Overall Length

566.9 cmReference

—

Overall weight

10,999.6 kgReference

—

Wheels & tyres

Rear Wheel Type

520/85R46Reference

—

Rear wheel tread range

58.5 to 119.5 inchesReference

—

Front Wheel Type

480/70R34Reference

—

Front Wheel tread range

73.1/76.9 inchesReference

—

Operator station

Cab Availability

AvailableReference

—

Seat Suspension

TRUEReference

—

MT735 Serial Numbers

2002

—

AKN20000Reference

2003

—

AKN30000Reference

2004

—

AKN40000Reference

Location:

—

On main tractor frame, front left side.Reference

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.