Compare/Fiat 70-66S vs Fiat 70-90

Fiat 70-66S vs Fiat 70-90

Verdict: Fiat 70-66S vs Fiat 70-90

The Fiat 70-66S and the Fiat 70-90 are both tractors — here is how they stack up on the figures that matter. Fiat 70-90 leads on rated power with 70 hp against 69 hp. Fiat 70-66S is the lighter machine (5,490 kg vs 6,702 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Fiat 70-66S is the newer design (1992 vs 1984). In short: choose the Fiat 70-90 for outright pulling power, or the Fiat 70-66S if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a 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

69 hp

70 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

FiatReference

liquid-cooledReference

Four gears (1-4) in three ranges (low, medium, high) with a two-speed high-low shift.Reference

Final drives

—

planetaryReference

Differential lock

—

hydraulic rearReference

Engine

51.5 kWReference

52.2 kWReference

Displacement

3.6 LReference

Bore/Stroke

100 x 115 mmReference

Power

51.5 kWReference

52.2 kWReference

Rated RPM

2500Reference

Starter

electricReference

—

Starter volts

12Reference

—

Fuel tank

—

93.1 LReference

Fuel system

—

direct injectionReference

Starter type

—

electricReference

Transmission

Type

creeperReference

Gears

20 forward and 12 reverseReference

24 forward and 12 reverseReference

Transmission

—

Hi-LoReference

PTO & Hydraulics

Rear lift

3564 kgReference

3499 kgReference

Rear PTO Type

540/1000Reference

Pressure

—

190.0 barReference

Pump flow

—

34.4 lpmReference

Rear Type

—

II/IReference

Rear PTO

—

independentReference

Clutch

—

280mm dry discReference

Engine RPM

—

1000@2375Reference

Dimensions

2WD Wheelbase

230 cmReference

—

4WD Wheelbase

224 cmReference

—

Weight

5490 to 6151 poundsReference

6702 to 7341 poundsReference

Front tire

7.50-18Reference

2WD Rear tire

13.6/12-36Reference

13.6-38Reference

2WD Standard tires (ag)

Front: 7.50-18. Rear: 13.6/12-36Reference

Front: 7.50-18. Rear: 13.6-38Reference

4WD Standard tires (ag)

Front: 12.4/11-24. Rear: 13.6/12-36Reference

Front: 11.2-28. Rear: 13.6-38Reference

2WD Length

346 cmReference

—

4WD Length

346 cmReference

—

2WD ROPS Weight

2490 kgReference

—

4WD ROPS Weight

2790 kgReference

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2WD Ground clearance

52 cmReference

—

4WD Ground clearance

41 cmReference

—

2WD Front tread

140 to 190 cmReference

—

4WD Front tread

156 to 199 cmReference

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Rear tread

139 to 199 cmReference

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2WD Steering wheel

160 cmReference

—

4WD Steering wheel

166 cmReference

—

Wheelbase

—

233 cmReference

Length

—

358 cmReference

Height

—

263 cmReference

2WD Weight

—

3040 kgReference

4WD Weight

—

3329 kgReference

Electrical

Ground

negativeReference

—

Battery volts

12Reference

—

Fiat 70-66S Height

2WD Hood

147 cmReference

—

4WD Hood

149 cmReference

—

ROPS

249 cmReference

—

Cab

240 cmReference

—

Variants

70-90

—

2WDReference

70-90DT

—

4WDReference

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.