Head to head · Industrial

Challenger 45 vs Challenger MT645B

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ChallengerModel A

Challenger 45

Industrial

power
240 hp
displacement
403 ci
Cylinders
6
Forward gears
16
Full 45 specs
Image not recorded
ChallengerModel B

Challenger MT645B

Agricultural

power
235 hp
displacement
449 ci
Cylinders
6
Forward gears
Not recorded
Full MT645B specs
ChallengerChallenger 45
vs
ChallengerChallenger MT645B

How they compare

Headline specs vs. the whole Industrial

n = 38–55

Engine Displacement

▲ MT645B higher · +46 ci (+11%)
45403 ci
MT645B449 ci
Median Industrial Tractor284 ci

45 is in the 57th percentile; MT645B is in the 66th · 53 models

Cylinders

= Effectively tied
456
MT645B6
Median Industrial Tractor4

45 is in the 88th percentile; MT645B is in the 88th · 55 models

Operating Weight

▲ 45 higher · +3,105 lb (+16%)
4522,700 lb
MT645B19,595 lb
Median Industrial Tractor9,127 lb

45 is in the 79th percentile; MT645B is in the 72nd · 49 models

Length

▲ 45 higher · +5 in (+2%)
45211 in
MT645B206 in
Median Industrial Tractor125 in

45 is in the 94th percentile; MT645B is in the 92nd · 39 models

45 (A)MT645B (B)Median Industrial Tractor

Full comparison

Every spec, side by side

General Information

SpecChallenger 45Challenger MT645BDifference
ManufacturerChallengerChallengerSame
Model45MT645B—
CategoryIndustrialAgricultural—

Engine

SpecChallenger 45Challenger MT645BDifference
ManufacturerCaterpillarSisu—
Model311674ETA—
Power Output240hp235hp▲ 45+5 hp · +2%
Rated RPM2,100RPM2,200RPM▲ MT645B+100 RPM · +5%
Cylinders66Same
Displacement403ci449ci▲ MT645B+46 ci · +11%
Bore4.1in4.3in▲ MT645B+0.2 in · +5%
Stroke5in5.3in▲ MT645B+0.3 in · +6%

Transmission

SpecChallenger 45Challenger MT645BDifference
TypeFull Power Shiftcontinuously variable transmission (CVT)—

Dimensions & Weight

SpecChallenger 45Challenger MT645BDifference
Length211in206in▲ 45+5 in · +2%
Width91in118in▲ MT645B+27 in · +30%
Height120in124in▲ MT645B+4 in · +3%
Operating Weight22,700lb19,595lb▲ 45+3,105 lb · +16%

Hydraulics

SpecChallenger 45Challenger MT645BDifference
System TypeVariable-displacement Load-sensing Pressure-compensatedPressure Flow Compensated (PFC)—
Steering TypeDifferential PowerNot recorded—

Hitch & Towing

SpecChallenger 45Challenger MT645BDifference
Hitch TypeNot recordedThree-Point Hitch—
Hitch CategoryIII/IIIII—
Hitch PositionRearRearSame

Chassis & Drive

SpecChallenger 45Challenger MT645BDifference
Steering TypeDifferential PowerNot recorded—

Electrical

SpecChallenger 45Challenger MT645BDifference
Starter Type12-voltsElectric—

Capacities

SpecChallenger 45Challenger MT645BDifference
Coolant8.6gal8.9gal▲ MT645B+0.3 gal · +3%

Category context

Both models against the field

Engine Displacement

median 284 ci
A · 57th percentile (403 ci)B · 66th percentile (449 ci)

Cylinders

median 4
A · 88th percentile (6)B · 88th percentile (6)

Operating Weight

median 9,127 lb
A · 79th percentile (22,700 lb)B · 72nd percentile (19,595 lb)

Length

median 125 in
A · 94th percentile (211 in)B · 92nd percentile (206 in)

Width

median 70.5 in
A · 80th percentile (91 in)B · 99th percentile (118 in)
A · 45B · MT645BMedian Industrial Tractor
Full spec pageChallenger 45Full spec pageChallenger MT645B