Compare/Fiat 666 vs Fiat 70-66

Fiat 666 vs Fiat 70-66

Verdict: Fiat 666 vs Fiat 70-66

The Fiat 666 and the Fiat 70-66 are both tractors — here is how they stack up on the figures that matter. Fiat 70-66 leads on rated power with 69 hp against 68 hp. Fiat 70-66 is the lighter machine (3,150 kg vs 6,700 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Fiat 70-66 holds more fuel (73.1 L vs 72.7 L) for longer stints between fills. Fiat 70-66 is the newer design (1984 vs 1982). In short: choose the Fiat 70-66 for outright pulling power, or the Fiat 666 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

68 hp

69 hp

Confidence

40%

Guide price

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Overview

Manufacturer

FiatReference

With 18.4/15-30 rear tires.Reference

liquid-cooledReference

Final drives

spur gearReference

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Differential lock

mechanical rearReference

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Trailer brakes

hydraulicReference

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Variants

666

similar Hesston modelReference

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666DT

4WDReference

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Engine

Fuel tank

72.7 LReference

73.1 LReference

Engine

50.7 kWReference

51.5 kWReference

Displacement

3.5 LReference

3.6 LReference

Bore/Stroke

100 x 110 mmReference

100 x 115 mmReference

Power

50.7 kWReference

51.5 kWReference

Pre-heating

thermostartReference

—

Rated RPM

2500Reference

Starter

electricReference

—

Starter volts

12Reference

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Oil capacity

44.8 LReference

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Torque

—

224.0 NmReference

Torque RPM

—

1400Reference

Transmission

Gears

20 forward and 8 reverseReference

12 forward and 4 reverseReference

Clutch

dry discReference

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PTO & Hydraulics

Type

creeperReference

—

Pump flow

33.7 lpmReference

33.6 lpmReference

Rear Type

II/IReference

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Control

position and draft controlReference

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Rear lift

3139 kgReference

2900 kgReference

Rear PTO

independentReference

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Rear PTO Type

540/1000 (1.375)Reference

540/1000Reference

Dimensions

2WD Wheelbase

230 cmReference

—

4WD Wheelbase

225 cmReference

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Weight

6700 to 7275 poundsReference

3150 kgReference

Front tire

7.50-16Reference

7.50-18Reference

2WD Rear tire

16.9-30Reference

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2WD Standard tires (ag)

Front: 7.50-16. Rear: 16.9-30Reference

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4WD Standard tires (ag)

Front: 11.2-24. Rear: 16.9-30Reference

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Ag front

7.50-20Reference

12.4-24 (4WD)Reference

Ag rear

13.6/12-38Reference

13.6-36Reference

Length

393 cmReference

401 cmReference

2WD Weight

3039 kgReference

—

4WD Weight

3299 kgReference

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2WD Front tread

139 to 189 cmReference

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Rear tread

139 to 199 cmReference

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Steering wheel

167 cmReference

—

Wheelbase

—

229 cmReference

Rear tire

—

13.6-36Reference

Height

—

254 cmReference

Electrical

Ground

negativeReference

—

Charging system

alternatorReference

—

Battery volts

12Reference

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Battery AH

120Reference

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Fiat 666 Height

Hood

148 cmReference

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ROPS

245 cmReference

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Exhaust

241 cmReference

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Speeds

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.