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This category covers Fiat 500 Hybrid (2020, 2021, 2022, 2023, 2024, 2025, 2026) models.

Motorisation (1.0 FireFly N3 BSG)

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The Fiat 500 Hybrid is available with a single light hybrid inline three-cylinder engine mounted to the front of the vehicle. The engine itself is fed by a multipoint indirect injection with distribution ensured through the chain.

Technical Specifications

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ElementUnit1.0 FireFly N3 BSG
Cylinder Capacitycm³999
Boremm70.0
Strokemm86.5
Bore / Courseφ0.809
Compression Ratioφ12
Fuel RecommendedN/A95 RON, E10
Euro StandardsN/A6
PowerkW51
Max Speedrpm6,000
TorqueNm92
Maximum boost pressureBarN/A

Manual Transmission Gear

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Distribution

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Distribution is provided through a silent chain, although this is variable and has the particularity to drive the water pump.

Parallelism

  • Front Wheels ***

Running Values:

Toe-in between rims (mm)0.5 ± 1 mm

Rear wheels

At first glance

Motor Oil

Viscosity0W20
Manufacturer Standard9.55535-DM1
ACEA StandardACEA C5
Genuine oilSelenia ECO2
Volume2.2 L (2.5 L with filter)

Note:
ACEA C6 is compatible with ACEA C5. It's worth opting for the latter, as more tests are required, including a timing chain elongation test. The Fiat standard requested is currently hard to find.

Manual gearbox oil

Viscosity75W
Manufacturer's standard9.55550-MZ6
API StandardGL4+
Original OilTutela Transmission Gearforce

Brake fluid + clutch

StandardsF.M.V.S.S. n° 116, DOT 4, ISO 4925, SAE J1704
Manufacturer's standard9.55597 or MS.90039
Original fluidTutela Top 4/S

Ethanol / E85

At first glance, the engine seems to be a good candidate for easy conversion to ethanol, thanks to its indirect injection and rather high compression ratio (12:1).

The N3 engine, not BSG, but identical in specification to the N3 BSG, is used in Brazil as a Flex Fuel engine. It produces a few more horsepower and more torque at a slightly lower rpm.

Sources and more information

https://www.autopareri.com/forums/topic/...

https://en.wikipedia.org/wiki/Fiat_Globa...

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