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Challenger MT645D Specs ( 2011-2013 )

Name: Challenger MT645D
Brand: Challenger

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Nebraska Test #S872

CHALLENGER MT645D

Max Drawbar HP 207.5 hp

Max Pull 25,705 lbs

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Overview

The Challenger MT645D is a row-crop farm tractor manufactured by AGCO in Jackson, Minnesota, between 2011 and 2013. It features an AGCO Power 8.4L 6-cylinder diesel engine paired with a Techstar continuously variable transmission (CVT) and was originally priced at $263,455 in 2013.

Ideal Applications

Tested Power and Performance: During Nebraska Tractor Test 2716, this model achieved a maximum tested PTO power of 250.8 hp and a maximum drawbar pull of 25,705 lbs.

Hydraulic and Hitch Configuration: The tractor is equipped with a closed center load sensing (CCLS) hydraulic system delivering a total flow of 46 gpm and a Category III rear lift capacity of 22,760 lbs.

Chassis and Mechanical Specifications: This four-wheel drive unit is built on a 122-inch wheelbase with a standard cab featuring OptiRide Plus hydraulic suspension and 4WD Quadlink front axle suspension.

Production

Description	Row-Crop tractor / Built in Jackson, Minnesota, USA / Original price was $263,455 in 2013
Manufacturer	Challenger (a part of AGCO)

Engine

Engine type	AGCO Power 8.4L 6-cyl diesel
Bore/Stroke	4.370x5.709 inches (111 x 145 mm)
Compression	16.7:1
Description	AGCO Power / turbocharged air-to-air intercooled diesel / 6-cylinder / liquid-cooled
Displacement	513.8 ci (8.4 L)
Emission control	selective catalytic reduction (SCR)
Emissions	Interim Tier IV
Fuel system	electronic high-pressure common rail
Maximum Power	270 hp (201.3 kW)
Power (gross)	240 hp (179.0 kW)
Pre-heating	thermostart
Rated RPM	2100
Starter	electric
Starter volts	12
Drawbar (tested)	170.7 hp (127.3 kW)
Engine (gross)	240 hp (179.0 kW)
PTO (claimed)	205 hp (152.9 kW)
PTO (tested)	250.8 hp (187.0 kW)

Transmission

Description	continuously variable transmission
Gears	infinite forward and reverse
Transmission	Techstar CVT
Type	continuously variable transmission

Mechanical

Cab	Cab standard with air-conditioning and OptiRide Plus hydraulic suspension AGCO System 150 (optional); AGCOMMAND (optional)
Description	Hydraulic wet disc brakes
Differential lock	electro-hydraulic
Drive type	Four-wheel drive
Final drives	inboard planetary
Steering	hydrostatic power
Trailer brakes	pneumatic (optional)

Capacity

Exhaust fluid (DEF)	16 gal (60.6 L)
Fuel	167 gal (632.1 L)
Hydraulic system	29.1 gal (110.1 L)

Hydraulics

Capacity	29.1 gal (110.1 L)
Pressure	2900 psi (200.0 bar)
SCV flow	26.4 gpm (99.9 lpm)
Total flow	46 gpm (174.1 lpm)
Type	closed center load sensing (CCLS)
Valves	4 to 6

Hitch

Drawbar	Cat. 3
Front Hitch	III (optional)
Front lift (at ends)	11000 lbs (4989 kg)
Rear lift	22760 lbs (10323 kg)
Rear Type	III

PTO

Clutch	electro-hydraulic
Engine RPM	540E@1577
Rear PTO	independent
Rear PTO Type	1000/1000E (1.75)

Electrical

Batteries	2
Battery volts	12
Charging amps	240
Charging system	alternator
Ground	negative

Dimensions & Tires

Standard tires (ag)	Front: 480/70R34. Rear: 520/85R46
Front axle	4WD / 4WD Quadlink Suspension
Height (cab)	141 inches (358 cm)
Length	215.7 inches (547 cm)
Max weight	33070 lbs (15000 kg)
Rear axle	4.33 by 105 inches (109 by 2667 mm) / 4.33 by 118 inches (109 by 2997 mm)
Shipping weight	24250 lbs (10999 kg)
Wheelbase	122 inches (309 cm)
Front tire	480/70R34
Rear tire	520/85R46
Weight	24250 lbs (10999 kg)
Wheelbase	122 inches (309 cm)

OCED Tractor Test 2716

Description	Diesel Techstar CVT 4WDJanuary 2012 - March 2012, Link: OCED Tractor Test 2716 file / PTO performance / Drawbar performance / Pull at 7.43 KPH / Pull at 4.13 KPH
Fuel use	13.4 gal/hour (50.7 l/hour) / 12.2 gal/hour (46.2 l/hour) / 13.4 gal/hour (50.7 l/hour) / 11.5 gal/hour (43.5 l/hour)
Max power	250.8 hp (187.0 kW) / 170.7 hp (127.3 kW)
Max pull	25705 lbs (11659 kg)
Power at rated engine speed	215.9 hp (161.0 kW)
Power at rated PTO speed	250.0 hp (186.4 kW)

References

Description	Challenger MT600D Series published in 2011, by AGCO

Variants

8650	similar Massey Ferguson model

Nebraska Tractor Test Results

Test #S872

Download PDF

Test Date: January - March 2012

Location: DLG - Test Centre, Technology and Farm inputs, Max-Eyth-Weg 1, D-64823 Gross-Umstadt, Germany

This section is compiled from original Nebraska Tractor Test PDFs using AI-assisted extraction and human review. For full verification, download the source PDF above. Differences between reports, incomplete source data, and occasional extraction or data entry mistakes can occur.

PTO Drawbar Hydraulics Technical Sound Tires & Weight

Maximum Power & Fuel Consumption

Max Power (1 Hour)

250.80 hp

@ N/A rpm

Rated Engine Speed

215.90 hp

N/A lb/hp·hr

Standard PTO Speed

250.00 hp

@ N/A rpm PTO

Torque Statistics

Maximum Torque	819 lb-ft (1,110 Nm)
Torque Rise	51.6%

PTO Power Curve

Maximum Power & Fuel Consumption Details

Condition	HP	kW	RPM	DEF gal/hr	DEF L/hr
Maximum Power (1 Hour)	250.80	187.00	1950	0.82	3.12

Varying Power & Fuel Consumption

Click column headers to sort

Power	RPM	gal/hr	lb/hp·hr	hp·hr/gal	DEF gal/hr
215.90	2100	12.24	0.40	17.65	0.72
185.30	2120	10.72	0.41	17.29	0.60
139.70	2128	8.58	0.43	16.27	0.46
93.30	2136	6.49	0.49	14.40	0.33
46.80	2145	4.51	0.68	10.37	0.19
N/A	2151	2.71	N/A	N/A	0.05

Fuel Consumption Characteristics

Click column headers to sort

Condition	Power	kW	Pull (lbs)	Pull (kN)	Speed	km/h	RPM	Slip
Maximum Power—Turtle 7.5	170.70	127.30	13,870	62	4.62	7.43	2103	3.30
75% of Pull at Maximum Power—Turtle 7.5	131.20	97.80	10,420	46	4.72	7.59	2122	2.50
50% of Pull at Maximum Power—Turtle 7.5	89.30	66.60	6,940	31	4.83	7.77	2131	1.60
75% of Pull at Reduced Engine Speed—Turt...	131.40	98.00	10,410	46	4.73	7.62	1773	2.30
50% of Pull at Reduced Engine Speed—Turt...	89.20	66.50	6,925	31	4.83	7.77	1780	1.40

Maximum Power At Selected Speeds (Unballasted)

Click column headers to sort

Power	kW	Pull (lbs)	Pull (kN)	Speed	km/h	RPM	Slip	inHg	Fuel Consumption Hp Hr Gal	Fuel Consumption Lb Hp Hr	Range Setting	Temp F Air Dry	Temp F Cool Med
175.70	131.00	25,705	114.33	2.56	4.13	1970	15.30	29.70	13.42	0.52	Turtle 5	52	162
201.00	149.90	22,475	99.98	3.35	5.40	1943	6.60	29.70	15.21	0.46	Turtle 6	52	163
207.50	154.70	18,255	81.20	4.26	6.86	1952	4.80	29.70	15.59	0.45	Turtle 7.5	50	162
207.20	154.50	15,575	69.27	4.99	8.03	1950	3.80	29.70	15.78	0.44	Turtle 9	52	169
204.80	152.70	12,315	54.77	6.24	10.04	1950	3.00	29.70	15.38	0.46	Turtle 11	50	172
201.20	150.00	10,315	45.89	7.31	11.76	1951	2.50	29.70	15.48	0.45	Turtle 13	52	172
196.50	146.50	8,665	38.54	8.50	13.68	1955	2.10	29.70	15.08	0.46	Turtle 15	50	174
194.20	144.80	7,555	33.61	9.64	15.51	1953	1.90	29.70	14.99	0.47	Turtle 17	50	181
193.00	143.90	14,220	63.26	5.09	8.19	1950	3.40	29.70	14.44	0.48	Rabbit 9	50	160
201.60	150.30	12,095	53.80	6.25	10.06	1950	2.90	29.70	15.15	0.46	Rabbit 11	50	163
200.90	149.80	10,340	46.00	7.29	11.73	1952	2.30	29.70	15.23	0.46	Rabbit 13	50	165
197.90	147.60	8,605	38.29	8.62	13.88	1953	2.10	29.70	15.10	0.46	Rabbit 15	50	172
196.70	146.70	7,670	34.12	9.62	15.48	1953	1.80	29.70	15.13	0.46	Rabbit 17	50	174
194.70	145.20	6,815	30.32	10.71	17.24	1957	1.50	29.70	15.04	0.47	Rabbit 19	50	174

Category: III Quick Attach: No, Yes

Two Outlet Sets Combined

Sustained Pressure	2,380 psi
Flow Rate (min press)	46.20 gpm
Max Power	52.60 hp

Single Outlet Set

Sustained Pressure	2,290 psi
Flow Rate (min press)	28.90 gpm
Max Power	34.90 hp

Engine

Make	Sisu Diesel
Type	six cylinder vertical with turbocharger, air to air intercooler and D.E.F(diesel exhaust fluid) technology
Displacement	513 cu in (8419 ml)
Compression Ratio	16.7 to 1
Rated Engine Speed	2100 rpm
Air Cleaner	two paper elements
Crankshaft	lengthwise

Chassis

Type	front wheel assist
Steering	hydrostatic
Transmission	CVT. A combination of mechanical and hydrostatic sections allow an infinite speed adjustment within the ranges noted. The transmission has two mechanical ranges.
Wheelbase	122.20 in (3105 mm)
Front Tread Width	70.9 (1800 mm) to 76.8 (1950 mm) in
Rear Tread Width	72.8 (1850 mm) to 74.8 (1900 mm) in
Brakes	multiple wet disc hydraulically operated by two foot pedals that can be locked together
Hydraulic Control	direct engine drive
Unladen Tractor Mass	25,200 lbs ( 11,430 kg )

Consumables

Fuel	Fuel No. 2 Diesel
DEF Fluid	32% aqueous urea solution
Engine Oil	SAE 10W40

Sound Levels

At No Load In Turtle 4 6 Mph	71.00 dB(A)

Tires & Tracks

Rear Tires	***, Two, 710/75R42
Front Tires	**, Two, 600/65R34
Height of Drawbar	22.20 in (565 mm)

Static Weight

Rear	14,100 lbs
Front	11,265 lbs
Total	25,365 lbs

Challenger MT645D Specs ( 2011-2013 )

Overview

Ideal Applications

Production

Engine

Transmission

Mechanical

Capacity

Hydraulics

Hitch

PTO

Electrical

Dimensions & Tires

OCED Tractor Test 2716

References

Variants

Nebraska Tractor Test Results

PTO Performance

Maximum Power & Fuel Consumption

Torque Statistics

PTO Power Curve

Maximum Power & Fuel Consumption Details

Varying Power & Fuel Consumption

Drawbar Performance

Fuel Consumption Characteristics

Maximum Power At Selected Speeds (Unballasted)

Hydraulic Performance

Two Outlet Sets Combined

Single Outlet Set

Technical Specifications

Engine

Chassis

Consumables

Sound Levels

Sound Levels

Tires & Weight

Tires & Tracks

Static Weight

Test Remarks