The Fiat 198 A8.000 is a 1,368 cc inline-four petrol engine produced between 2020 and 2023. It belongs to Fiat's FireFly family, featuring multi-point fuel injection (MPFI), dual overhead camshafts (DOHC), and 16 valves. Delivering 74 kW (100 PS) and 132 Nm of torque, it provides balanced performance for urban and light-duty applications.
Fitted to models including the Fiat 500, Fiat Panda, and Fiat Tipo, the 198 A8.000 was engineered for everyday drivability and fuel efficiency. Its emissions compliance is achieved through a three-way catalytic converter with closed-loop lambda control, meeting Euro 6d-Full standards across its production run. The engine’s transverse mounting supports front-wheel-drive platforms and enables compact packaging in small hatchbacks and compact sedans.
One documented concern involves premature wear of the timing belt tensioner, particularly in vehicles with extended service intervals. This issue, referenced in Fiat Service Information Bulletin 52 03 02, can lead to belt slippage or fracture if not addressed during scheduled maintenance. From 2021, revised tensioner components were introduced to improve durability and reduce field failures.
Production years 2020–2023 meet Euro 6d-Full emissions standards (VCA UK Type Approval #VCA/EMS/5679).
The Fiat 198 A8.000 is a 1,368 cc inline-four petrol engine engineered for compact hatchbacks (2020–2023). It combines multi-point fuel injection with DOHC valvetrain technology to deliver responsive low-end performance and fuel economy. Designed to meet Euro 6d-Full standards, it balances everyday usability with modern emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,368 cc | |
| Fuel type | Petrol (Unleaded, 95 RON min) | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 73.0 mm × 80.5 mm | |
| Power output | 74 kW (100 PS) @ 6,250 rpm | |
| Torque | 132 Nm @ 3,750 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 6d-Full | |
| Compression ratio | 11.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (replaced every 120,000 km) | |
| Oil type | SAE 5W-30 (ACEA A5/B5) | |
| Dry weight | 98 kg |
The naturally aspirated design provides smooth, predictable power delivery ideal for city driving but requires strict adherence to 120,000 km timing belt service intervals to prevent catastrophic failure. SAE 5W-30 oil meeting ACEA A5/B5 standards is essential for valve train longevity and thermal stability. Use of fuel with minimum 95 RON is required to prevent knock under load. The timing belt-driven water pump should be replaced concurrently during belt service per Fiat SIB 52 03 02. Post-2021 models feature upgraded tensioner assemblies; pre-2021 units should verify tensioner condition during routine maintenance.
Oil Specs: Requires SAE 5W-30 meeting ACEA A5/B5 (Fiat SIB 52 03 02). Compatible with Fiat M111 05 specification.
Emissions: Euro 6d-Full certification applies to all 2020–2023 models (VCA Type Approval #VCA/EMS/5679).
Power Ratings: Measured under ECE R85 standards. Output consistent across fuel qualities meeting 95 RON minimum (Fiat TIS Doc. F198A8).
Fiat Technical Information System (TIS): Docs F198A8, SIB 52 03 02
VCA Type Approval Database (VCA/EMS/5679)
European Commission Regulation (EC) No 715/2007
The Fiat 198 A8.000 was used across Fiat's 323/356 platforms with transverse mounting and shared architecture with Lancia for compact applications. This engine received platform-specific adaptations-shorter intake manifolds in the 500 and revised ECU tuning in the Tipo-and from 2021 updated tensioner hardware improved service life, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the left-side engine block near the transmission bellhousing (Fiat TIS F198A8). The 8th VIN digit indicates engine type ('B' for 1.4L FireFly). Pre-2021 models have silver valve covers with ribbed design; post-2021 units use black valve covers with flat finish. Critical differentiation from turbo variants: 198 A8.000 lacks turbocharger and intercooler, with simpler intake plumbing. Service parts require production date verification - timing belt kits for pre-2021 models are incompatible with later tensioner revisions (Fiat SIB 52 03 02).
The 198 A8.000's primary reliability risk is timing belt tensioner wear, with elevated incidence in vehicles with extended service intervals. Internal Fiat quality reports from 2021 noted a significant number of pre-2021 units requiring premature belt replacement due to tensioner failure, while VCA MOT records show increased engine seizure incidents linked to neglected belt maintenance. Urban driving and infrequent long-distance use increase risk, making adherence to 120,000 km service intervals critical.
Analysis derived from Fiat technical bulletins (2020-2023) and UK DVSA failure statistics (2021-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FIAT 198-A8-000.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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