The Alfa Romeo AR 30588 is a 1,995 cc, inline-four turbocharged petrol engine produced between 2022 and 2023. It forms part of Alfa Romeo's modern gasoline lineup, featuring direct fuel injection, variable valve timing (Dual VVT), and a twin-scroll turbocharger. In standard tune it delivers 140 kW (190 PS), with torque peaking at 300 Nm from 1,750 rpm, providing strong low-end performance ideal for spirited driving and highway cruising.
Fitted to the 952 Giulia and 956 Stelvio in mid-to-high trim configurations, the AR 30588 was engineered to balance driving dynamics, emissions compliance, and fuel efficiency. Emissions control is achieved through a three-way catalytic converter, closed-loop lambda control, and cooled exhaust gas recirculation (EGR), enabling Euro 6d-TEMP certification across its production run for European markets.
One documented concern is potential degradation of the turbocharger wastegate actuator linkage, noted in Alfa Romeo Technical Bulletin 75/2022. This issue arises from carbon buildup and thermal stress on the vacuum-operated actuator, leading to inconsistent boost control. From 2022 onward, revised actuator hardware and updated ECU calibration were implemented to improve long-term reliability.
All production years (2022–2023) comply with Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/30588).
The Alfa Romeo AR 30588 is a 1,995 cc inline-four turbocharged petrol engine engineered for compact and mid-size performance models (2022–2023). It combines direct fuel injection with a twin-scroll turbocharger to deliver strong low-end torque and linear power delivery. Designed to meet Euro 6d-TEMP emissions standards, it balances spirited driving character with regulated efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged (twin-scroll) | |
| Bore × stroke | 88.0 mm × 82.0 mm | |
| Power output | 140 kW (190 PS) @ 5,750 rpm | |
| Torque | 300 Nm @ 1,750–4,500 rpm | |
| Fuel system | Direct injection (up to 200 bar) | |
| Emissions standard | Euro 6d-TEMP | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | IHI twin-scroll turbo with vacuum-actuated wastegate | |
| Timing system | Chain-driven (single-row, front-mounted) | |
| Oil type | SAE 5W-40, API SN/CF, ACEA C3 | |
| Dry weight | 134 kg |
The twin-scroll turbo provides strong low-RPM pull ideal for responsive driving but requires adherence to 15,000 km oil service intervals to protect the turbo bearings and timing chain. Use of ACEA C3 5W-40 oil is critical to maintain particulate filter compatibility and reduce turbo coking. Extended idling after high-load operation should be avoided to prevent heat soak in the turbocharger. Direct injectors are prone to deposit buildup; periodic cleaning per Alfa Romeo procedure is recommended. Post-2022 models benefit from updated wastegate actuator design and ECU mapping, reducing boost-related faults.
Oil Specs: Requires ACEA C3 5W-40 specification (Alfa Romeo SIB 75/2022). Compatible with API SN/CF standards.
Emissions: Euro 6d-TEMP certification applies to all production years (VCA Type Approval #VCA/EMS/30588).
Power Ratings: Measured under ECE R101 standards. Output assumes premium unleaded (RON 98) fuel quality (Alfa Romeo TIS A1995T06).
Alfa Romeo Technical Information System (TIS): Docs A1995T01, A1995T02, A1995T05, SIB 75/2022
VCA Type Approval Database (VCA/EMS/30588)
European Commission Regulation (EC) No 715/2007
The Alfa Romeo AR 30588 was used across Alfa Romeo's 952/956 platforms with longitudinal mounting in both the Giulia and Stelvio, creating shared drivetrain architecture. This engine received platform-specific calibrations-adapted intake manifolds in the 952 and revised cooling layouts in the 956-and from 2022 the facelifted Stelvio adopted a revised ECU map for improved cold-start emissions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block near the starter motor (Alfa Romeo TIS A1995T07). The 8th VIN digit indicates engine type ('F' for AR 30588). Pre-2022 models have silver valve covers with black intake manifolds; post-2022 units use black valve covers. Critical differentiation from higher-output versions: AR 30588 uses IHI RHF3 VJ27 turbo with round compressor housing, while Quadrifoglio variants use larger BorgWarner unit. Service parts require model-year verification - actuators before 06/2022 are incompatible with later revisions per Alfa Romeo SIB 75/2022.
The AR 30588's primary reliability risk is turbocharger wastegate actuator sticking, with elevated incidence in short-trip urban use. Internal Alfa Romeo field reports from 2023 indicated a notable number of pre-2022 units required actuator replacement before 100,000 km, while UK DVSA records show increased catalytic converter failures linked to prolonged rich-running conditions. Frequent cold starts and low-speed operation increase carbon buildup, making oil quality and warm-up cycles critical.
Analysis derived from Alfa Romeo technical bulletins (2022-2023) and UK DVSA failure statistics (2022-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ALFA-ROMEO AR30588.
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