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This category covers Fiat 500 Hybrid (2020, 2021, 2022, 2023, 2024, 2025) models.
Motorisation (1.0 FireFly N3 BSG)
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
| Element | Unit | 1.0 FireFly N3 BSG |
|---|---|---|
| Cylinder Capacity | cm³ | 999 |
| Bore | mm | 70.0 |
| Stroke | mm | 86.5 |
| Bore / Course | φ | 0.809 |
| Compression Ratio | φ | 12 |
| Fuel Recommended | N/A | 95 RON, E10 |
| Euro Standards | N/A | 6 |
| Power | kW | 51 |
| Max Speed | rpm | 6,000 |
| Torque | Nm | 92 |
| Maximum boost pressure | Bar | N/A |
Manual Transmission Gear
Distribution
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
| Viscosity | 0W20 | |
|---|---|---|
| Manufacturer Standard | 9.55535-DM1 | |
| ACEA Standard | ACEA C5 | |
| Genuine oil | Selenia ECO2 | |
| Volume | 2.2 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
| Viscosity | 75W |
| Manufacturer's standard | 9.55550-MZ6 |
| API Standard | GL4+ |
| Original Oil | Tutela Transmission Gearforce |
Brake fluid + clutch
| Standards | F.M.V.S.S. n° 116, DOT 4, ISO 4925, SAE J1704 |
| Manufacturer's standard | 9.55597 or MS.90039 |
| Original fluid | Tutela 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
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