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Challenger MT645E Specs ( 2014-2020 )

Name: Challenger MT645E
Brand: Challenger

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Nebraska Test #2906

Challenger MT645E

Max Drawbar HP 209.1 hp

Max Pull 22,750 lbs

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Overview

The Challenger MT645E is a row-crop farm tractor manufactured in Jackson, Minnesota, between 2014 and 2020. It features an 8.4L AGCO POWER six-cylinder diesel engine and a Techstar continuously variable transmission with infinite forward and reverse gears. The machine is built on a 122-inch wheelbase and is equipped with a rear hitch rated for 26,455 lbs of lift capacity.

Ideal Applications

Tested Performance Metrics: In Nebraska Tractor Test 2906, the tractor achieved a maximum tested PTO power of 242.6 hp and a maximum drawbar pull of 22,750 lbs.

Hydraulic System Configuration: The tractor is equipped with a closed center load sensing hydraulic system that delivers 54 gpm of flow at 2900 psi through four to six valves.

Powertrain and Emission Standards: The Tier IV compliant engine utilizes selective catalytic reduction technology and is paired with a 166-gallon fuel tank and a 15.8-gallon diesel exhaust fluid tank.

Production

Description	Row-Crop tractor / Built in Jackson, Minnesota, USA
Manufacturer	Challenger (a part of AGCO)

Engine

Engine type	AGCO POWER 8.4L 6-cyl diesel
Exhaust fluid (DEF)	15.8 gal (59.8 L)
Fuel tank	166 gal (628.3 L)
Bore/Stroke	4.37x5.71 inches (111 x 145 mm)
Description	AGCO POWER / turbocharged with air-to-air intercooler diesel / 6-cylinder 24-valve / liquid-cooled
Displacement	512.6 ci (8.4 L)
Emission control	selective catalytic reduction (SCR)
Emissions	Tier IV
Maximum Power	270 hp (201.3 kW)
Power	240 hp (179.0 kW)
Rated RPM	2100
Starter	electric
Starter volts	12
Drawbar (tested)	209.1 hp (155.9 kW)
PTO (claimed)	205 hp (152.9 kW)
PTO (tested)	242.6 hp (180.9 kW)

Transmission

Description	continuously variable transmission (CVT)
Gears	infinite forward and reverse (2-range)
Transmission	Techstar CVT
Type	continuously variable transmission (CVT)

Mechanical

Cab	Cab standard with air-conditioning. Optional OptiRide Plus hydraulic cab suspension. AgCommand ready; AUTO-GUIDE 3000
Description	Hydraulic wet disc brakes
Differential lock	electro-hydraulic
Drive type	Four-wheel drive
Steering	hydrostatic power

Hydraulics

Pressure	2900 psi (200.0 bar)
Pump flow	54 gpm (204.4 lpm)
Type	closed center load sensing (CCLS)
Valves	4 to 6

Hitch

Drawbar	Cat. 3
Rear lift (at ends)	26455 lbs (11999 kg)
Rear Type	III/IVN

PTO

Rear PTO	independent
Rear PTO Type	1000/1000E (1.75)

Electrical

Battery volts	12
Charging amps	240 (twin 120A)
Charging system	alternator
Charging volts	12
Ground	negative

Dimensions & Tires

Bar rear axle	4.33 by 105 inches (109 by 2667 mm) / 4.33 by 118 inches (109 by 2997 mm)
Height (cab)	141 inches (358 cm)
Length	218.6 inches (555 cm)
Shipping weight	23810 lbs (10800 kg)
Wheelbase	122 inches (309 cm)
Weight	23810 lbs (10800 kg)
Wheelbase	122 inches (309 cm)

OCED Tractor Test 2906

Description	Diesel TechStar CVT 4WDJanuary 2015 - April 2015, Link: OCED Tractor Test 2906 file / PTO performance / Drawbar performance / Pull at 13.82KPH / Pull at 2.45KPH
Fuel use	13.5 gal/hour (51.1 l/hour) / 12.9 gal/hour (48.8 l/hour) / 13.5 gal/hour (51.1 l/hour) / 14.3 gal/hour (54.1 l/hour)
Max power	242.6 hp (180.9 kW) / 209.1 hp (155.9 kW)
Max pull	22750 lbs (10319 kg)
Power at rated engine speed	217.8 hp (162.4 kW)
Power at rated PTO speed	241.4 hp (180.0 kW)

References

Description	MT600E Series - An MVP on Any Field published in 2014, by AGCO / MT600E Series published in 2017, by AGCO

Variants

8727	similar Massey Ferguson model

Nebraska Tractor Test Results

Test #2906

Download PDF

Test Date: January to April, 2015

Location: IRSTEA Centre d'Antony, 1 rue Pierre-Gilles de Gennes CS 10030 Antony 92163, Cedex, France

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)

242.60 hp

@ 1950 rpm

Rated Engine Speed

217.80 hp

N/A lb/hp·hr

Standard PTO Speed

241.40 hp

@ N/A rpm PTO

Torque Statistics

Maximum Torque	790 lb.-ft. (1071 Nm) at 1200 rpm
Torque Rise	44.8%

PTO Power Curve

Maximum Power & Fuel Consumption Details

Condition	HP	kW	RPM	Fuel gal/hr	Fuel L/hr	DEF gal/hr	DEF L/hr
Rated Engine Speed	217.80	162.40	2098	12.88	48.76	0.74	2.80
Standard PTO Speed (1000 rpm)	241.40	180.00	1968	13.51	51.16	0.75	2.84
Maximum Power (1 Hour)	242.60	180.90	1950	13.52	51.16	0.75	2.84

Varying Power & Fuel Consumption

Click column headers to sort

Power	RPM	gal/hr	lb/hp·hr	hp·hr/gal	DEF gal/hr
217.80	2098	12.88	0.41	16.91	0.74
186.80	2120	11.42	0.43	16.36	0.50
140.50	2130	9.18	0.46	15.31	0.36
94.40	2139	7.09	0.52	13.32	0.31
47.30	2143	4.76	0.70	9.94	0.10
2.91	2151	2.91	N/A	N/A	N/A

Fuel Consumption Characteristics

Click column headers to sort

Condition	Power	kW	Pull (lbs)	Pull (kN)	Speed	km/h	Slip	Air °F	Air °C	Cool °F	Cool °C
Maximum Power - Turtle 8	184.70	137.70	14,075	63	4.92	7.92	5.90	46	8	194	90
75% of Pull at Maximum Power - Turtle 8	139.70	104.20	10,545	47	4.97	8.00	4.50	46	8	183	84
50% of Pull at Maximum Power - Turtle 8	95.20	71.00	7,035	31	5.08	8.17	3.20	46	8	181	83
75% of Pull at Reduced Engine Speed - Tu...	140.50	104.80	10,590	47	4.98	8.01	4.60	46	8	185	85
50% of Pull at Reduced Engine Speed - Tu...	94.70	70.60	7,035	31	5.05	8.12	2.80	46	8	183	84

Maximum Power At Selected Speeds

Click column headers to sort

Power	kW	Pull (lbs)	Pull (kN)	Speed	km/h	RPM	Slip	hp·hr/gal	inHg	Fuel Kg Kw Hr	Fuel Lb Hp Hr	Gear Setting	Kw H L	Temp Air F	Temp Cooling F
92.40	68.90	22,750	101.20	1.52	2.45	2129	15.60	10.40	30.30	0.40	0.66	Turtle 3	2.05	45	187
161.30	120.30	22,325	99.30	2.71	4.36	2121	12.40	13.48	30.30	0.31	0.51	Turtle 5	2.66	45	187
197.10	147.00	20,300	90.30	3.64	5.86	1972	8.20	14.70	30.30	0.29	0.47	Turtle 6.5	2.90	46	189
205.00	152.90	16,365	72.80	4.70	7.56	1968	5.00	15.08	30.30	0.28	0.46	Turtle 8	2.97	46	192
206.20	153.80	12,095	53.80	6.39	10.29	1954	3.10	15.08	30.30	0.28	0.46	Turtle 11	2.97	46	187
209.10	155.90	9,125	40.60	8.59	13.82	1955	2.50	15.33	30.30	0.27	0.45	Turtle 14	3.02	48	187
207.50	154.70	8,275	36.80	9.40	15.13	1978	2.20	14.21	30.30	0.30	0.49	Turtle 16 (Boosted)	2.80	50	190
205.70	153.40	7,015	31.20	11.00	17.70	1958	1.90	14.11	30.30	0.30	0.49	Turtle 18 (Boosted)	2.78	50	189
198.60	148.10	15,420	68.60	4.83	7.77	1912	6.40	14.62	30.70	0.29	0.47	Rabbit 8.5	2.88	57	189
203.00	151.40	12,790	56.90	5.95	9.58	1949	5.10	14.97	30.70	0.28	0.46	Rabbit 11	2.95	57	185
204.50	152.50	8,945	39.80	8.57	13.79	1950	2.30	15.08	30.70	0.28	0.46	Rabbit 14	2.97	59	194
205.70	153.40	7,825	34.80	9.86	15.87	1963	2.10	13.96	30.70	0.30	0.50	Rabbit 16 (Boosted)	2.75	59	194
206.10	153.70	7,060	31.40	10.95	17.62	1958	2.00	13.65	30.70	0.31	0.51	Rabbit 18 (Boosted)	2.69	61	192
202.50	151.00	5,845	26.00	12.99	20.91	1950	1.80	13.30	30.70	0.32	0.52	Rabbit 19 (Boosted)	2.62	61	198

Category: III Quick Attach: Yes

Lift Capacity

Two Outlet Sets Combined

Sustained Pressure	2,435 psi
Flow Rate (min press)	53.10 gpm
Max Power	N/A hp

Single Outlet Set

Sustained Pressure	2,265 psi
Flow Rate (min press)	35.80 gpm
Max Power	N/A hp

Engine

Make	AGCO Power Diesel
Type	six cylinder vertical with two turbochargers, 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	121.80 in (3093 mm)
Front Tread Width	61.4" (1560 mm) to 89.4" (2268 mm) in
Rear Tread Width	76.0" (1930 mm) to 89.1" (2262 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	11,190 kg

Consumables

Fuel	Fuel No. 2 Diesel
DEF Fluid	32% aqueous urea solution
Engine Oil	SAE 15W40 API service classification CJ-4

Sound Levels

At No Load In Turtle 4 9 Mph	71.00 dB(A)

Tires & Tracks

Rear Tires	**, 710/75R42
Front Tires	**, 600/65R34
Height of Drawbar	21.7 in (550 mm)

Static Weight

Rear	13,615 lbs
Front	11,220 lbs
Total	24,835 lbs

Challenger MT645E Specs ( 2014-2020 )

Overview

Ideal Applications

Production

Engine

Transmission

Mechanical

Hydraulics

Hitch

PTO

Electrical

Dimensions & Tires

OCED Tractor Test 2906

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

Hydraulic Performance

Lift Capacity

Two Outlet Sets Combined

Single Outlet Set

Technical Specifications

Engine

Chassis

Consumables

Sound Levels

Sound Levels

Tires & Weight

Tires & Tracks

Static Weight

Test Remarks