Compare/John Deere AOS vs John Deere AR Unstyled

John Deere AOS vs John Deere AR Unstyled

Verdict: John Deere AOS vs John Deere AR Unstyled

The John Deere AOS and the John Deere AR Unstyled are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 18 hp. Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer 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

18 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

liquid-cooled horizontal twinReference

Gear 1 used for pull test.Reference

Total built

820Reference

—

AR Total built

—

17,394Reference

AO Total built

—

2,686Reference

Variants

Row-cropReference

Standard front axleReference

OrchardReference

AOS

narrow orchardReference

Adjustable wide-frontReference

Single front wheelReference

AWH

High-crop, adjustable wide-frontReference

—

ANH

High-crop, single-front wheelReference

—

High-cropReference

Engine

Fuel tank

60.6 LReference

—

Aux. fuel

3.8 LReference

Drawbar (claimed)

13.4 kWReference

Belt (claimed)

17.9 kWReference

Plows

2Reference

Displacement

5.1 LReference

5.3 LReference

Bore/Stroke

140 x 165 mmReference

140 x 171 mmReference

Cooling system

thermo-siphonReference

Air cleaner

oil bathReference

Compression

3.96:1Reference

4.45:1Reference

Rated RPM

975Reference

Firing order

1-2Reference

Oil capacity

8.8 LReference

10.4 LReference

Coolant capacity

30.3 LReference

Sparkplug gap

0.762 mmReference

Drawbar (tested)

—

19.8 kWReference

Belt (tested)

—

22.6 kWReference

Belt power (max)

—

22.6 kWReference

Max power

—

19.8 kWReference

Transmission

John DeereReference

Type

unsynchronized gearReference

Gears

4 forward and 1 reverseReference

Clutch

dry discReference

PTO & Hydraulics

Rear PTO

transmissionReference

Rear PTO Type

540Reference

Hydraulic system

—

7.9 LReference

Capacity

—

7.9 LReference

Valves

—

1Reference

Pump flow

—

33.7 lpmReference

Dimensions

Wheelbase

174 cmReference

—

Rear tire

11.25x24Reference

42.75x10Reference

Ag rear

12.75x24Reference

12-26Reference

Height (hood)

134 cmReference

139 cmReference

Front tread

106 cmReference

121 cmReference

Rear tread

115 cmReference

131 cmReference

Weight

—

2154 kgReference

Front tire

—

28x6Reference

Ag front

—

6.00-16Reference

Length

—

314 cmReference

Operating weight

—

2154 kgReference

Ballasted weight

—

2880 kgReference

Rear axle

—

69 mmReference

AOS Serial Number Location

AOS Serial Numbers

1937

1000Reference

253521 (Unstyled)Reference

1938

1539Reference

255416 (Unstyled)Reference

1939

1700Reference

256700 (Unstyled)Reference

1940

1767Reference

257647 (Unstyled)Reference

1941

1878Reference

260000 (Unstyled)Reference

Final

1891Reference

284074 (Styled)Reference

Capacities

Diameter

32 cmReference

Width

154 cmReference

162 cmReference

RPM

975Reference

Speed

996.70 meters/minReference

Fuel

—

60.6 LReference

Electrical

Ground

positiveReference

Battery volts

6Reference

AR Serial Number Location

AR Serial Numbers

1935

—

250000 (Unstyled)Reference

1936

—

251486 (Unstyled)Reference

1942

—

261125 (Unstyled)Reference

1943

—

262157 (Unstyled)Reference

1944

—

262755 (Unstyled)Reference

1945

—

264198 (Unstyled)Reference

1946

—

265535 (Unstyled)Reference

1947

—

266643 (Unstyled)Reference

1948

—

268410 (Unstyled)Reference

1949

—

270131 (Unstyled)Reference

1950

—

272000 (Styled)Reference

1951

—

275938 (Styled)Reference

1952

—

278700 (Styled)Reference

1953

—

282351 (Styled)Reference

Test results

Belt fuel use (max)

—

11.7 l/hourReference

Max pull

—

1926 kgReference

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.