Head to head · Sub-Compact

AGCO ST40 vs David Brown 850

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AGCOModel A

AGCO ST40

Sub-Compact

power
40.1 hp
displacement
91.4 ci
Cylinders
3
Forward gears
16
Full ST40 specs
David Brown 850 Tractor
David BrownModel B

David Brown 850

Utility

power
40.1 hp
displacement
154 ci
Cylinders
4
Forward gears
6
Full 850 specs
AGCOAGCO ST40
vs
David BrownDavid Brown 850

How they compare

Headline specs vs. the whole Sub-Compact

n = 616–816

Engine Power

= Effectively tied
ST4040.1 hp
85040.1 hp
Median Sub-Compact Tractor26.9 hp

ST40 is in the 77th percentile; 850 is in the 77th · 816 models

Engine Displacement

▲ 850 higher · +62.6 ci (+68%)
ST4091.4 ci
850154 ci
Median Sub-Compact Tractor91.4 ci

ST40 is in the 50th percentile; 850 is in the 86th · 757 models

Cylinders

▲ 850 higher · +1 (+33%)
ST403
8504
Median Sub-Compact Tractor3

ST40 is in the 50th percentile; 850 is in the 90th · 802 models

Forward Gears

▲ ST40 higher · +10 (+167%)
ST4016
8506
Median Sub-Compact Tractor9

ST40 is in the 89th percentile; 850 is in the 18th · 616 models

ST40 (A)850 (B)Median Sub-Compact Tractor

Full comparison

Every spec, side by side

General Information

SpecAGCO ST40David Brown 850Difference
ManufacturerAGCODavid Brown—
ModelST40850—
CategorySub-CompactUtility—

Engine

SpecAGCO ST40David Brown 850Difference
ManufacturerIsekiDavid Brown—
ModelE3CD2.5L 4-cyl diesel—
Power Output40.1hp40.1hpSame
Rated RPM2,600RPM2,000RPM▲ ST40+600 RPM · +30%
Cylinders34▲ 850+1 · +33%
Displacement91.4ci154ci▲ 850+62.6 ci · +68%
Bore3.4in3.5in▲ 850+0.1 in · +3%
Stroke3.3in4in▲ 850+0.7 in · +21%

Transmission

SpecAGCO ST40David Brown 850Difference
TypeMultiple options available (synchronized shuttle, power shuttle, hydrostatic)Unsynchronized gear—

Dimensions & Weight

SpecAGCO ST40David Brown 850Difference
Length122in114in▲ ST40+8 in · +7%
Width60.2inNot recorded—
Height94.4in51.8in▲ ST40+42.6 in · +82%
Operating Weight3,323lb4,094lb▲ 850+771 lb · +23%

Hydraulics

SpecAGCO ST40David Brown 850Difference
System TypeOpen CenterNot recorded—
Steering TypePowerManual—

Power Take-off (PTO)

SpecAGCO ST40David Brown 850Difference
TypeRear PTO: 540, Mid PTO: SAE 15 1.0Transmission or Live (optional)—
Speed 1540rpm540rpmSame
Speed 2Not recorded1,000rpm—

Tires

SpecAGCO ST40David Brown 850Difference
Rear Tire Size13.6-24Not recorded—

Hitch & Towing

SpecAGCO ST40David Brown 850Difference
Hitch TypeRearNot recorded—
Hitch CategoryIISame
Hitch PositionRearRearSame

Chassis & Drive

SpecAGCO ST40David Brown 850Difference
Chassis Type4WD4x2 2WD—
Drive Type4WD2WD—
Steering TypePowerManual—
Brake TypeNot recordedDifferential mechanical expanding shoe—

Electrical

SpecAGCO ST40David Brown 850Difference
Starter TypeElectricElectricSame

Capacities

SpecAGCO ST40David Brown 850Difference
Coolant1.7gal3.6gal▲ 850+1.9 gal · +112%

Operator Station

SpecAGCO ST40David Brown 850Difference
TypeROPSOpen operator station—

Category context

Both models against the field

Engine Power

median 26.9 hp
A · 77th percentile (40.1 hp)B · 77th percentile (40.1 hp)

Engine Displacement

median 91.4 ci
A · 50th percentile (91.4 ci)B · 86th percentile (154 ci)

Cylinders

median 3
A · 50th percentile (3)B · 90th percentile (4)

Forward Gears

median 9
A · 89th percentile (16)B · 18th percentile (6)

Operating Weight

median 2,700 lb
A · 63rd percentile (3,323 lb)B · 81st percentile (4,094 lb)
A · ST40B · 850Median Sub-Compact Tractor
Full spec pageAGCO ST40Full spec pageDavid Brown 850