The Fiat 198 A3.000 – Petrol is a 1,368 cc, inline — four, naturally aspirated engine produced between 2017 and 2023. It features a DOHC 16 — valve configuration with MultiAir III variable valve timing and port fuel injection, delivering 63 kW (86 PS) at 5,500 rpm and 120 Nm of torque at 3,750 rpm. The MultiAir III system enables fully variable intake valve lift and phasing, improving throttle response and low — end torque for urban driving.
Fitted primarily to the Fiat 500X (334…
Production years 2017–2019 meet Euro 6c standards; 2020–2023 models comply with Euro 6d-TEMP .
The Fiat 198 A3.000 – Petrol is a 1,368 cc inline-four naturally aspirated engine designed for compact crossover and sedan applications (2017–2023). It integrates MultiAir III variable valve timing with port fuel injection to enhance low-RPM torque and drivability. Engineered to meet Euro 6c and Euro 6d-TEMP emissions standards, it supports responsive urban driving while maintaining regulatory 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 | 70.0 mm × 88.3 mm | |
Power output | 63 kW (86 PS) @ 5,500 rpm | |
Torque | 120 Nm @ 3,750 rpm | |
Fuel system | Port fuel injection with MultiAir III | |
Emissions standard | Euro 6c (2017–2019); Euro 6d-TEMP (2020–2023) | |
Compression ratio | 11.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Timing belt (service interval: 120,000 km or 6 years) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 98 kg |
The Fiat 198 A3.000 – Petrol was used across Fiat's 334/352 platforms with transverse mounting and shared with Lancia for badge-engineered variants. This engine received platform-specific adaptations-revised ECU mapping in the 500X and enhanced cooling in the Tipo-and from 2020 the updated 500X City Cross models adopted Euro 6d-TEMP-compliant calibration, creating emissions-based interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The 198 A3.000 is generally reliable when maintained properly, but early models (2017–2019) are prone to MultiAir actuator failure. Later units (post-2020) benefit from improved components. Regular servicing, especially timely timing belt replacement, and use of 95 RON fuel significantly improve longevity. Well-maintained engines can exceed 150,000 km without major issues.
The most common issues are MultiAir actuator wear (especially pre-2020), throttle body carbon buildup, ignition coil failures, and coolant leaks from the water pump seal. These are documented in Fiat service bulletins and are largely preventable with scheduled maintenance and use of correct fluids and parts.
This engine was used in the Fiat 500X (334-series, 2017–2023) and Fiat Tipo (352-series, 2017–2022) in 1.4-litre form. It was also badge-engineered as the Lancia Ypsilon 1.4 Gold (2018–2021). All applications are front-wheel drive with transverse engine mounting and meet Euro 6c or Euro 6d-TEMP standards depending on model year.
Limited tuning potential exists. ECU remapping can yield modest gains (~5–8%) in throttle response and mid-range torque, but power output is constrained by the naturally aspirated design and MultiAir III system. Aftermarket intake or exhaust upgrades offer minimal benefit. Significant tuning is not recommended due to narrow powerband and valve train limitations.
In combined driving, the 198 A3.000 achieves approximately 6.0–6.6 L/100km (47–43 mpg UK). City driving may see 7.2 L/100km (39 mpg), while highway cruising can reach 5.4 L/100km (52 mpg). Real-world economy depends heavily on driving style, with stop-start urban use reducing efficiency. Fuel system requires minimum 95 RON petrol.
Yes. The 198 A3.000 is an interference engine. If the timing belt fails or jumps, the pistons can collide with open valves, causing severe internal damage. This makes adherence to the 120,000 km or 6-year replacement interval absolutely critical. Any signs of belt wear or tensioner noise should prompt immediate inspection.
Fiat specifies SAE 5W-30 viscosity oil meeting API SN/CF standards. ACEA A1/B1 compliant oils are also acceptable. Oil should be changed every 15,000 km or 12 months to maintain MultiAir actuator and valve train lubrication. Always use quality synthetic or semi-synthetic oil suitable for high-revving petrol engines.
Comprehensive technical documentation and regulatory references
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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