Compare/Challenger MT665B vs Challenger MT745

Challenger MT665B vs Challenger MT745

Verdict: Challenger MT665B vs Challenger MT745

The Challenger MT665B and the Challenger MT745 are both tractors — here is how they stack up on the figures that matter. Challenger MT745 leads on rated power with 255 hp against 246 hp. Challenger MT745 is the lighter machine (12,789 kg vs 19,550 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger MT665B is the newer design (2005 vs 2002). In short: choose the Challenger MT745 for outright pulling power, or the Challenger MT665B 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

246 hp

255 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Challenger (a part of AGCO)Reference

CaterpillarReference

Pull at 3.7 KPHReference

Gear 2 used for pull test.Reference

Final drives

inboard planetaryReference

—

Differential lock

electrohydraulic front and rearReference

—

Trailer brakes

hydraulicReference

—

Drive

—

crawlerReference

Steering

—

electro-hydraulicReference

Engine

216.3 kWReference

—

Drawbar (tested)

172.4 kWReference

132.5 kWReference

Displacement

8.4 LReference

8.8 LReference

Bore/Stroke

111 x 145 mmReference

112 x 149 mmReference

Power

216.3 kWReference

—

Fuel system

electronic direct injectionReference

—

Air cleaner

dual paper elementsReference

Pre-heating

1000W coolant heaterReference

—

Compression

17.5:1Reference

16.0:1Reference

Rated RPM

2200Reference

2100Reference

Idle RPM

800-2350Reference

—

Starter volts

12Reference

Oil capacity

67.0 LReference

—

Coolant capacity

33.7 LReference

—

Max power

172.4 kWReference

132.5 kWReference

Power at rated engine speed

183.2 kWReference

155.1 kWReference

Fuel tank

—

787.3 LReference

Engine (gross)

—

190.2 kWReference

Drawbar (claimed)

—

146.9 kWReference

Power (gross)

—

190.2 kWReference

Transmission

TechStarReference

—

Gears

18 forward and 9 reverseReference

30 forward and 8 reverseReference

PTO & Hydraulics

PTO (claimed)

179.0 kWReference

152.9 kWReference

PTO (tested)

199.8 kWReference

176.1 kWReference

Hydraulic system

99.9 LReference

—

Type

power shiftReference

creeperReference

Capacity

99.9 LReference

—

Pressure

200.0 barReference

Valves

4 to 6Reference

Total flow

147.6 lpmReference

164.6 lpmReference

Rear Type

IIIReference

Rear lift (at 24"/610mm)

7076 kgReference

—

Front Hitch

IIReference

—

Front lift

5488 kgReference

—

Rear PTO

independentReference

Clutch

electro-hydraulic wet discReference

hydraulic wet discReference

Rear PTO Type

1000 (1.75)Reference

Engine RPM

1000@2031Reference

—

Power at rated PTO speed

198.3 kWReference

164.7 kWReference

Rear lift

—

7257 kgReference

Capacities

Fuel

601.8 LReference

—

Dimensions

Wheelbase

307 cmReference

243 cmReference

Weight

19550 to 20290 poundsReference

12789 kgReference

Front tire

380/85R34Reference

—

Rear tire

480/80R46Reference

—

Ag front

380/85R34Reference

—

Ag rear

480/80R46Reference

—

Length

523 cmReference

—

Width

299 cmReference

—

Height (cab)

313 cmReference

—

Ground clearance

56 cmReference

—

Bar rear axle

109 by 2997 mmReference

4064 mmReference

Rear tread

152 to 223 cmReference

—

Shipping

8867 kgReference

—

Operating

9203 kgReference

—

Ballasted

13177 kgReference

—

Max Drawbar

2549 kgReference

—

Max front axle

4926 kgReference

—

Max rear axle

7731 kgReference

—

Gauge

—

304 to 406 cmReference

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

150Reference

160Reference

Batteries

2Reference

—

Battery CCA

775Reference

—

Battery volts

12Reference

Test results

Fuel use

56.0 l/hourReference

46.2 l/hourReference

Max pull

12279 kgReference

11990 kgReference

MT745 Serial Numbers

2002

—

ALA20000Reference

2003

—

ALA30000Reference

2004

—

ALA40000Reference

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.