Compare/Fiat 55-66 vs Fiat 56-66S

Fiat 55-66 vs Fiat 56-66S

Verdict: Fiat 55-66 vs Fiat 56-66S

The Fiat 55-66 and the Fiat 56-66S are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 54 hp. Fiat 55-66 is the lighter machine (2,925 kg vs 4,685 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Fiat 56-66S is the newer design (1992 vs 1985). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Fiat

Fit score

Best match

Clear

Fiat

Fit score

Best match

Clear

Rated power

54 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

FiatReference

liquid-cooledReference

Engine

Fuel tank

73.1 LReference

—

Engine

40.5 kWReference

Displacement

2.7 LReference

Bore/Stroke

100 x 115 mmReference

Power

40.5 kWReference

Rated RPM

2500Reference

Torque

176.0 NmReference

—

Torque RPM

1300Reference

—

Starter

—

electricReference

Starter volts

—

12Reference

Transmission

Gears

12 forward and 4 reverseReference

20 forward and 8 reverseReference

Type

—

creeperReference

PTO & Hydraulics

Pump flow

34.5 lpmReference

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Rear lift

2900 kgReference

2125 kgReference

Rear PTO Type

540/1000Reference

Dimensions

Wheelbase

218 cmReference

—

Weight

2925 kgReference

4685 to 5236 poundsReference

Front tire

7.50-16Reference

5.50-16Reference

Rear tire

14.9R28Reference

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Ag front

11.2R24 (4WD)Reference

—

Ag rear

14.9R28Reference

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Length

363 cmReference

—

Height

238 cmReference

—

2WD Wheelbase

—

199 cmReference

4WD Wheelbase

—

190 cmReference

2WD Rear tire

—

12.4/11-28Reference

2WD Standard tires (ag)

—

Front: 5.50-16. Rear: 12.4/11-28Reference

4WD Standard tires (ag)

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Front: 7.50-20. Rear: 12.4/11-28Reference

2WD Length

—

297 cmReference

4WD Length

—

296 cmReference

2WD Weight

—

2125 kgReference

4WD Weight

—

2375 kgReference

2WD Ground clearance

—

44 cmReference

4WD Ground clearance

—

33 cmReference

2WD Front tread

—

130 to 180 cmReference

4WD Front tread

—

138 to 181 cmReference

Rear tread

—

120 to 180 cmReference

Steering wheel

—

145 cmReference

Electrical

Ground

—

negativeReference

Battery volts

—

12Reference

Fiat 56-66S Height

Hood

—

127 cmReference

Cab

—

224 cmReference

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.