Compare/John Deere 4520 vs John Deere 6M 125

John Deere 4520 vs John Deere 6M 125

Verdict: John Deere 4520 vs John Deere 6M 125

The John Deere 4520 and the John Deere 6M 125 are both tractors — here is how they stack up on the figures that matter. John Deere 6M 125 leads on rated power with 123 hp against 122 hp. John Deere 4520 is the lighter machine (12,285 kg vs 13,007 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 6M 125 holds more fuel (174.9 L vs 54.9 L) for longer stints between fills. John Deere 6M 125 is the newer design (2024 vs 1969). In short: choose the John Deere 6M 125 for outright pulling power, or the John Deere 4520 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

John Deere

Fit score

Best match

Clear

John Deere

Fit score

Best match

Clear

Rated power

122 hp

123 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

Clutchless shifting on the move between all gears. Inching pedal for precise movements.Reference

liquid-cooled inlineReference

Total built

6,228 (Synchro range)Reference

—

Drive

4x4 HFWD 4WDReference

—

Differential lock

hydraulic rearReference

electro-hydraulicReference

Final drives

—

planetaryReference

Engine

Drawbar (claimed)

79.8 kWReference

—

Drawbar (tested)

82.9 kWReference

—

Displacement

6.6 LReference

4.5 LReference

Bore/Stroke

108 x 121 mmReference

106 x 127 mmReference

Air cleaner

dryReference

—

Pre-heating

coolant heaterReference

—

Compression

16.4:1Reference

—

Rated RPM

2200Reference

2100Reference

Idle RPM

800-2200Reference

—

Operating RPM

1500-2200Reference

—

Firing order

1-5-3-6-2-4Reference

—

Starter volts

12Reference

Coolant capacity

26.5 LReference

—

Intake valve clearance

0.457 mmReference

—

Exhaust valve clearance

0.559 mmReference

—

Oil capacity

60.6 LReference

—

Oil change

100 hReference

—

Power at rated engine speed

92.0 kWReference

—

Max power

82.9 kWReference

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Fuel Type

dieselReference

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No of Cylinders

4 cylinderReference

—

Rated engine speed

2,400 RPMReference

—

Engine torque at rated speed

61.2 kgReference

—

Bore and stroke

3.386x4.134 inchesReference

—

Compression ratio

20.5:1Reference

—

Cooling system

liquid-cooledReference

—

Exhaust fluid (DEF)

—

18.9 LReference

Engine (gross)

—

92.0 kWReference

Engine (max)

—

101.0 kWReference

Emissions

—

Tier IVReference

Rated Power (gross)

—

92.0 kWReference

Maximum Power (gross)

—

101.0 kWReference

Torque

—

584.4 NmReference

Torque RPM

—

1600Reference

Starter

—

electricReference

Transmission

John Deere Power ShiftReference

AutoPowr IVTReference

Gears

8 forward and 4 reverseReference

infinite forward and reverseReference

Oil type

John Deere 303Reference

—

Transmission Type

E-HSTReference

—

Wheel Drive

4WDReference

—

PTO & Hydraulics

PTO (claimed)

89.5 kWReference

72.3 kWReference

PTO (tested)

92.0 kWReference

—

Hydraulic system

68.1 LReference

—

Type

full power shiftReference

infinitely variable transmissionReference

Capacity

68.1 LReference

—

Pressure

155.1 barReference

—

Valves

1 to 3Reference

—

Rear Type

III/IIReference

IIIN/IIReference

Rear PTO

independentReference

Clutch

wet discReference

electro-hydraulic wet discReference

Rear PTO Type

1000Reference

540/1000 (1.375)Reference

Power at rated PTO speed

85.9 kWReference

—

Rear valves

—

0 to 3Reference

Mid valves

—

2 to 4Reference

Pump flow

—

113.6 lpmReference

Rear lift (at 24"/610mm)

—

3597 kgReference

Front Hitch

—

IIINReference

Front lift

—

3297 kgReference

Engine RPM

—

1000@1969Reference

Front PTO

—

independentReference

Front PTO Type

—

1000 (1.375)Reference

Capacities

Fuel

189.2 LReference

—

Fuel tank

54.9 LReference

174.9 LReference

Crankcase oil volume

7.9 qtsReference

—

Dimensions

Wheelbase

270 cmReference

240 cmReference

Weight

12285 to 14175 poundsReference

6250 kgReference

Front tire

10.00-16Reference

11.00-16Reference

Rear tire

20.8-38Reference

—

Ag front

14L-16Reference

—

Ag rear

24.5-32Reference

—

Length

433 cmReference

429 cmReference

Width

243 cmReference

245 cmReference

Height

269 cmReference

279 cmReference

Height (steering wheel)

220 cmReference

—

Clearance (front axle)

60 cmReference

46 cmReference

Clearance (rear axle)

78 cmReference

—

Clearance (drawbar)

45 cmReference

—

Rear axle

2997 mmReference

—

Front tread

146 to 211 cmReference

—

Rear tread

160 to 273 cmReference

—

Shipping

5572 kgReference

—

Operating

6429 kgReference

—

Ballasted

8162 kgReference

—

2WD Rear tire

—

18.4R-38Reference

2WD Standard tires (ag)

—

Front: 11.00-16. Rear: 18.4R-38Reference

4WD Standard tires (ag)

—

Front: 380/85R24. Rear: 460/85R34Reference

Shipping weight

—

5899 kgReference

John Deere 4520 attachments

4520 Serial Numbers

1969

1000Reference

—

1970

7055Reference

—

Location:

Serial number plate on the rear of the 4520.Reference

—

Final

8977Reference

—

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

72 (with A/C)Reference

250Reference

Batteries

2Reference

—

Battery volts

6Reference

12Reference

Battery AH

172Reference

—

Total cold cranking amps

770 CCAReference

—

Test results

Fuel use

31.0 l/hourReference

—

Max pull

5997 kgReference

—

Speeds

General

Make & Model

John DeereReference

—

Cruise control

StandardReference

—

Country of manufacturer

USAReference

—

PTO

PTO Power

52 hpReference

—

Rear PTO Power

AvailableReference

—

Rear PTO RPM

540 RPMReference

—

Mid PTO

AvailableReference

—

Mid PTO RPM

2,100 RPMReference

—

Steering & brakes

Brakes

Wet disc brakesReference

—

Steering type

Power steeringReference

—

Hydraulics

Pump Rated Output (total)

17.1 gpmReference

—

Hydraulics Type

open centerReference

—

Maximum operating pressure

2,500 psiReference

—

Remote Valves

0 to 5 ValvesReference

—

Steering & Implements flow

5.1 gpm (12 gpm)Reference

—

Rear Hitch category (SAE designation)

Category IReference

—

Rear Hitch maximum lift capacity

1,419.7 kgReference

—

Dimensions & weight

Height Over ROPS

246.9 cmReference

—

Height Over Cab

234.7 cmReference

—

Overall Length

325.6 cmReference

—

Overall Width

233.4 cmReference

—

Overall weight

1,748.6 kgReference

—

Operator station

Cab Availability

AvailableReference

—

Seat Suspension

TRUEReference

—

John Deere 6M 125 attachments

Attachment overview

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.