Compare/John Deere 8285R vs John Deere 8420

John Deere 8285R vs John Deere 8420

Verdict: John Deere 8285R vs John Deere 8420

The John Deere 8285R and the John Deere 8420 are both tractors — here is how they stack up on the figures that matter. John Deere 8285R leads on rated power with 285 hp against 284 hp. John Deere 8420 is the lighter machine (21,650 kg vs 27,218 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 8285R is the newer design (2011 vs 2002). In short: choose the John Deere 8285R for outright pulling power, or the John Deere 8420 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

285 hp

284 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

The AutoPowr/IVT is available with 50 km/h top speeds with ILS.Reference

With 18.4R46 rear tires.Reference

Original price

$211,192 (2011)Reference

—

Differential lock

front lock on 1500 and ILS front axlesReference

—

Steering

ActiveCommand Steering optional (ACS)Reference

hydrostatic powerReference

Trailer brakes

hydraulic and air optionalReference

hydraulicReference

Engine

Fuel tank

694.9 LReference

—

Engine (gross)

212.5 kWReference

211.8 kWReference

Engine (max)

234.1 kWReference

Drawbar (tested)

166.1 kWReference

154.7 kWReference

Displacement

9.0 LReference

8.1 LReference

Bore/Stroke

118 x 136 mmReference

116 x 129 mmReference

Emissions

Stage IIIBReference

Tier IIReference

Emission control

exhaust gas recirculation (EGR)Reference

—

Rated Power (gross)

212.5 kWReference

211.8 kWReference

Maximum Power (gross)

247.6 kWReference

234.1 kWReference

Air cleaner

dual stageReference

dry with secondary elementReference

Pre-heating

block heater (optional)Reference

—

Compression

16:1Reference

16.5:1Reference

Rated RPM

2100Reference

2200Reference

Starter

electricReference

—

Starter volts

12Reference

Oil capacity

27.9 LReference

149.9 LReference

Oil change

500 h (JD Plus-50 II oil)Reference

250 hReference

Coolant capacity

41.0 LReference

34.0 LReference

Max power

166.1 kWReference

154.7 kWReference

Power at rated engine speed

191.9 kWReference

175.6 kWReference

Fuel Type

DieselReference

—

No of Cylinders

6 cylinderReference

—

Rated engine speed

2,100 RPMReference

—

Emissions compliance

Interim Tier IV, Stage IIIBReference

—

Bore and stroke

4.66x5.35 inchesReference

—

Compression ratio

16:1Reference

—

Cooling system

liquid-cooledReference

—

Interval for engine oil change

500 hrReference

—

Engine (net)

—

201.3 kWReference

Rated Power (net)

—

201.3 kWReference

Maximum Power (net)

—

223.7 kWReference

Fuel system

—

electronic high-pressure common rail (HPCR)Reference

Idle RPM

—

900-2300Reference

Operating RPM

—

1500-2200Reference

Transmission

John Deere AutoPowrReference

John Deere PowerShiftReference

Gears

infinite forward and reverseReference

16 forward and 4 reverseReference

Transmission Type

PowershiftReference

—

forward and reverse options

Powershift -16F x 4R | IVT - infinite forward and reverseReference

—

Wheel Drive

4WDReference

—

PTO & Hydraulics

PTO (claimed)

178.2 kWReference

175.2 kWReference

PTO (tested)

214.4 kWReference

200.9 kWReference

Type

infinitely variable transmission (IVT)Reference

full power shiftReference

Pressure

200.0 barReference

Rear valves

3 to 5Reference

—

Pump flow

132.5 lpmReference

—

Total flow

227.1 lpmReference

160.9 lpmReference

Rear Type

4N/3Reference

III/IIINReference

Rear lift (at 24"/610mm)

8482 kgReference

—

Front Hitch

3N/2 (optional)Reference

IIINReference

Front lift (at ends)

5579 kgReference

—

Rear PTO

independentReference

Rear PTO Type

540 (1-3/8 optional)Reference

540/1000 (1.375 optional)Reference

Power at rated PTO speed

206.1 kWReference

—

Hydraulic system

—

140.0 LReference

ILS Hydraulic system

—

149.9 LReference

ILS Capacity

—

149.9 LReference

Valves

—

4 to 5Reference

SCV flow

—

113.6 lpmReference

Rear lift

—

7847 kgReference

Front lift

—

4989 kgReference

Clutch

—

hydraulic wet discReference

Engine RPM

—

1000@2200Reference

Dimensions

Wheelbase

302 cmReference

298 cmReference

Weight

27218 to 30252 poundsReference

21650 to 23780 poundsReference

Front tire

420/90R30Reference

16.9R30Reference

Rear tire

480/80R46Reference

18.4R46Reference

Ag front

420/90R30Reference

16.9R30Reference

Ag rear

480/80R46Reference

18.4R46Reference

Length

656 cmReference

538 cmReference

Width

444 cmReference

—

Height (cab)

352 cmReference

310 cmReference

Clearance (front axle)

51 cmReference

—

Clearance (rear axle)

63 cmReference

—

Clearance (drawbar)

32 cmReference

—

Operating

13722 kgReference

10786 kgReference

Max front axle

8000 kgReference

—

Max rear axle

11500 kgReference

—

Front axle

—

Independent Link SuspensionReference

Rack-and-pinion rear axle

—

119 by 3009 mmReference

4WD Front tread

—

152 to 203 cmReference

ILS Front tread

—

152 to 223 cmReference

Shipping

—

9820 kgReference

ILS Shipping

—

10455 kgReference

Max Drawbar

—

4536 kgReference

John Deere 8285R attachments

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

200Reference

150Reference

Batteries

2Reference

Battery CCA

925Reference

Battery volts

12Reference

Total cold cranking amps

925 CCAReference

—

Capacities

Max capacity

18000 kgReference

—

Capacity

548 ciReference

140.0 LReference

Crankcase oil volume

29.5 qtsReference

—

Fuel

—

605.6 LReference

Front hubs

—

3.4 LReference

ILS Front hubs

—

4.0 LReference

Front diff.

—

13.4 LReference

Test results

Fuel use

57.5 l/hourReference

51.5 l/hourReference

Max pull

10279 kgReference

13591 kgReference

Speeds

General

Make & Model

John DeereReference

—

Cruise control

TRUEReference

—

Country of manufacturer

USAReference

—

Hydraulics

Capacity Valves

24 valveReference

—

Pump Rated Output (total)

60 gpmReference

—

Hydraulics Type

closed center pressure-flow compensatedReference

—

Maximum operating pressure

2,900 psiReference

—

Remote Valves

3 to 5 valvesReference

—

Rear Hitch category (SAE designation)

Category 3/3N | Category 4N/3Reference

—

Front Hitch category (SAE designation)

Category 3N/2 (optional)Reference

—

Power

Rated Power

285 hpReference

—

PTO

PTO Power

239 hpReference

—

Rear PTO Power

AvailableReference

—

Rear PTO RPM

1,000 RPMReference

—

Steering & brakes

Brakes

differential hydraulic wet discReference

—

Steering type

hydrostatic power, ActiveCommand Steering (ACS) optionalReference

—

Dimensions & weight

Height Over Cab

352.8 cmReference

—

Overall Length

619.5 cmReference

—

Overall Width

444.8 cmReference

—

Drawbar clearance

32 cmReference

—

Front axle clearance

61.7 cmReference

—

Overall weight

13,722.1 kgReference

—

Wheels & tyres

Rear Wheel Type

480/80R46Reference

—

Front Wheel Type

420/90R30Reference

—

Operator station

Cab Availability

AvailableReference

—

Variants

8420

—

wheeled tractorReference

8420T

—

crawlerReference

8420 Serial Numbers

2002

—

1001Reference

2003

—

10001Reference

2004

—

20001Reference

2005

—

30001Reference

Location:

—

Serial number plate on rear of tractor.Reference

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.