The Alfa Romeo AR 30558 is a 1,995 cc, inline — four turbocharged petrol engine produced between 2019 and 2024. It features direct fuel injection, dual overhead camshafts (DOHC), and variable valve timing (VVT) on both intake and exhaust. In standard tune, it delivers 206 kW (280 PS) at 5,700 rpm and 400 Nm of torque at 2,500–4,500 rpm, providing strong mid — range performance and responsive driving dynamics.
Fitted to the Giulia and Stelvio Quadrifoglio models, the AR 30558…
All AR 30558 engines comply with Euro 6d-TEMP emissions standards .
The Alfa Romeo AR 30558 is a 1,995 cc inline-four turbocharged petrol engine engineered for high-performance models (2019–2024). It combines direct fuel injection with dual variable valve timing and a twin-scroll turbocharger to deliver sharp throttle response and high specific output. Designed to meet Euro 6d-TEMP standards, it balances track-ready performance with regulated emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,995 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (IHI twin-scroll) | |
Bore × stroke | 88.0 mm × 81.4 mm | |
Power output | 206 kW (280 PS) @ 5,700 rpm | |
Torque | 400 Nm @ 2,500–4,500 rpm | |
Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
Emissions standard | Euro 6d-TEMP | |
Compression ratio | 9.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | IHI twin-scroll turbo with electronic wastegate | |
Timing system | Chain-driven DOHC | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 135 kg |
The Alfa Romeo AR 30558 was used across Alfa Romeo's 952 platform with longitudinal mounting. This engine received platform-specific adaptations-revised intake manifolds in the Stelvio Quadrifoglio and higher-boost calibrations in the Giulia Quadrifoglio-and from 2022 received an updated high-pressure fuel pump design, creating 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 AR 30558 delivers exceptional performance and responsiveness, but pre-2022 models are prone to high-pressure fuel pump wear if low-octane fuel is used. Later revisions (post-2022) improved HPFP durability, so well-maintained examples can exceed 120,000 km. Regular servicing and using high-quality oil (0W-30 Fiat 9.55535-S2) and 98 RON fuel greatly aid longevity.
The most documented issues are high-pressure fuel pump wear, turbo wastegate actuator failure, intake valve carbon buildup, and oil consumption. These are confirmed in Alfa Romeo service bulletins and technical circulars, particularly affecting early production units. Adhering to service intervals and using premium fuel reduces risk.
This 2.0L turbo petrol engine was used in the Alfa Romeo Giulia Quadrifoglio (2.0 Turbo 280 HP) from 2019–2024 and the Stelvio Quadrifoglio (2.0 Turbo 280 HP) from 2020–2024. All models comply with Euro 6d-TEMP standards under VCA / Manufacturer Specification.
Aftermarket ECU tuning is common on the AR30558 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Moderate to high. In a Giulia Quadrifoglio 2.0 Turbo (280 HP), combined consumption is ~10.2 L/100km (~27.7 mpg UK). Real-world figures vary: city driving may see 13-15 L/100km, while highway runs achieve 7.5 L/100km. Performance driving significantly increases fuel use. Always use 98 RON premium unleaded for optimal performance and emissions control.
Yes. The AR 30558 is an interference engine. If the timing chain fails or skips, pistons will contact open valves, causing catastrophic internal damage. Chain replacement is recommended every 120,000 km per Alfa Romeo maintenance schedule. Any abnormal noise from the timing cover should be investigated immediately.
Alfa Romeo specifies a 0W-30 synthetic oil meeting Fiat 9.55535-S2 specification. This low-SAPS oil is critical for turbocharger and variable valve timing longevity. Change intervals are 15,000 km or 24 months, whichever comes first. Using non-compliant oil may void warranty and accelerate wear.
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Regulation (EC) No 715/2007
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