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Challenger MT575D vs Challenger MT645
Verdict: Challenger MT575D vs Challenger MT645
The Challenger MT575D and the Challenger MT645 are both tractors — here is how they stack up on the figures that matter. Challenger MT645 leads on rated power with 181 hp against 177 hp. Challenger MT575D is the lighter machine (7,711 kg vs 8,618 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger MT645 holds more fuel (454.2 L vs 431.5 L) for longer stints between fills. Challenger MT575D is the newer design (2012 vs 2002). In short: choose the Challenger MT645 for outright pulling power, or the Challenger MT575D if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.
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Fit & specs
Challenger
85
Fit score
Best match
Clear
Challenger
85
Fit score
Best match
Clear
Rated power
177 hp
181 hp
Confidence
40%
40%
Guide price
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Overview
Manufacturer
Challenger (a part of AGCO)Reference
Challenger (a part of AGCO)Reference
Gear 2B used for pull test.Reference
PTO performanceReference
Factories
Jackson, Minnesota, USAReference
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Original price
$195,905 (2013 deluxe )Reference
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Final drives
inboard planetaryReference
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Differential lock
electro-hydraulic full lockingReference
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Steering
hydrostatic powerReference
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Trailer brakes
pneumatic (optional)Reference
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Variants
7622
similar Massey Ferguson modelReference
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Engine
Engine
149.1 kWReference
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Drawbar (tested)
125.9 kWReference
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Displacement
7.4 LReference
7.4 LReference
Bore/Stroke
108 x 134 mmReference
108 x 134 mmReference
Emissions
Interim Tier IVReference
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Emission control
selective catalyitic reduction (SCR)Reference
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Power
149.1 kWReference
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Maximum Power
160.3 kWReference
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Fuel system
electronic high pressure common railReference
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Air cleaner
dual stage dryReference
dual paper elementsReference
Pre-heating
thermostartReference
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Compression
17.8:1Reference
16.5:1Reference
Rated RPM
2100Reference
2200Reference
Starter
electricReference
—
Starter volts
12Reference
12Reference
Max power
125.9 kWReference
137.6 kWReference
Power at rated engine speed
138.1 kWReference
135.2 kWReference
Fuel Type
dieselReference
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No of Cylinders
6 cylinderReference
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Rated engine speed
2,100 RPMReference
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Emissions compliance
Interim Tier IV | selective catalyitic reduction (SCR)Reference
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Bore and stroke
4.252x4.724 inchesReference
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Compression ratio
17.4:1Reference
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Cooling system
liquid-cooledReference
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Transmission
Transmission
TechStar CVTReference
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Gears
infinite forward and reverseReference
18 forward and 6 reverseReference
Transmission Type
CVTReference
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Wheel Drive
4WDReference
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Rear Axle Drive Type
inboard planetaryReference
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PTO & Hydraulics
PTO (claimed)
123.0 kWReference
134.2 kWReference
PTO (tested)
150.9 kWReference
137.6 kWReference
Hydraulic system
99.9 LReference
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Type
continuously variable transmissionReference
power shiftReference
Capacity
99.9 LReference
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Pressure
200.0 barReference
200.0 barReference
Valves
2 to 4Reference
4Reference
SCV flow
92.0 lpmReference
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Total flow
147.6 lpmReference
147.6 lpmReference
Rear Type
IIIReference
IIIReference
Control
electronic lower link draft controlReference
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Rear lift (at 24"/610mm)
5284 kgReference
8346 kgReference
Drawbar
Cat. 2Reference
—
Rear PTO
independentReference
independentReference
Clutch
electro-hydraulicReference
electro-hydraulic wet discReference
Rear PTO Type
540E/1000E/1000Reference
1000Reference
Power at rated PTO speed
146.8 kWReference
137.1 kWReference
Engine RPM
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1000@2091Reference
Capacities
Fuel
431.5 LReference
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Exhaust fluid (DEF)
41.6 LReference
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Fuel tank
431.5 LReference
454.2 LReference
Diesel exhaust fluid (DEF) tank
41.6 LReference
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Dimensions
Wheelbase
299 cmReference
307 cmReference
Weight
7711 kgReference
8618 kgReference
Front tire
420/85R28Reference
14.9R30Reference
Rear tire
480/80R42Reference
18.4R42Reference
Standard tires (ag)
Front: 420/85R28. Rear: 480/80R42Reference
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Length
508 cmReference
515 cmReference
Height (cab)
306 cmReference
307 cmReference
Shipping weight
7711 kgReference
8618 kgReference
Max weight
12501 kgReference
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Bar rear axle
94 by 2275 mmReference
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Long bar rear axle
94 by 2870 mmReference
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Ag front
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14.9R30Reference
Ag rear
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18.4R42Reference
Width
—
249 cmReference
Electrical
Ground
negativeReference
negativeReference
Charging system
alternatorReference
alternatorReference
Charging amps
240Reference
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Batteries
2Reference
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Battery CCA
600Reference
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Battery volts
12Reference
12Reference
Total cold cranking amps
600 CCAReference
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Test results
Fuel use
42.0 l/hourReference
41.3 l/hourReference
Max pull
7630 kgReference
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General
Make & Model
Challenger (a part of AGCO)Reference
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Cruise control
AvailableReference
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SCV control
JoystickReference
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Drawbar category
Cat. 2Reference
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Rear Axle Type
Flange rear axleReference
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Country of manufacturer
France | USAReference
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Power
Rated Power
200 hpReference
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PTO
PTO Power
165 hpReference
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Rear PTO Power
AvailableReference
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Rear PTO RPM
1,000 RPMReference
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Steering & brakes
Brakes
Hydraulic wet disc brakesReference
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Steering type
hydrostatic powerReference
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Hydraulics
Pump Rated Output (total)
39 gpmReference
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Hydraulics Type
closed center load sensing (CCLS)Reference
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Maximum operating pressure
2,900 psiReference
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Remote Valves
2 to 4 ValvesReference
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Rear Hitch category (SAE designation)
Category IIIReference
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Rear Hitch Sensing Type
electronic lower link draft controlReference
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Dimensions & weight
Height Over Cab
306.8 cmReference
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Overall Length
508.5 cmReference
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Overall weight
7,711.1 kgReference
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Wheels & tyres
Rear Wheel Type
480/80R42Reference
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Front Wheel Type
420/85R28Reference
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Operator station
Cab Availability
AvailableReference
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Seat Suspension
TRUEReference
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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.