The Alfa Romeo AR 30736 is a 1,995 cc, inline — four turbocharged petrol engine produced between 2022 and 2023. It features gasoline direct injection (GDI), dual overhead camshafts (DOHC), and a twin — scroll turbocharger, delivering 223 kW (303 PS) at 5,700 rpm and 450 Nm of torque from 2,250–4,500 rpm. This engine was engineered as the high — performance petrol unit for Alfa Romeo’s premium performance sedan and SUV, offering near — supercar output in a compact package.
Fit…
All production years 2022–2023 meet Euro 6d-TEMP emissions standards (VCA UK Type Approval #VCA/EMS/7736).
The Alfa Romeo AR 30736 is a 1,995 cc inline-four turbocharged petrol engine designed for high-performance applications (2022–2023). It utilizes gasoline direct injection and a twin-scroll turbocharger to deliver aggressive throttle response and strong mid-range torque. Designed to meet Euro 6d-TEMP emissions standards, it balances extreme performance 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 × 81.5 mm | |
Power output | 223 kW (303 PS) @ 5,700 rpm | |
Torque | 450 Nm @ 2,250–4,500 rpm | |
Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
Emissions standard | Euro 6d-TEMP | |
Compression ratio | 9.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | IHI twin-scroll turbo with electronically controlled wastegate | |
Timing system | Chain-driven (double-row primary, single-row secondary) | |
Oil type | Fiat 9.55535-S2 (SAE 0W-40) | |
Dry weight | 143 kg |
The Alfa Romeo AR 30736 was used across Alfa Romeo's 952/956 platforms with longitudinal rear-transverse mounting and shared architecture with Stellantis. This engine received platform-specific tuning—slightly revised cooling in the 956 Stelvio and enhanced throttle mapping in the 952 Giulia—and from 2023 the facelifted 952/956 models adopted revised high-pressure fuel pump drives, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The AR 30736's primary reliability risk is high-pressure fuel pump drive wear on early builds, with elevated incidence in track or high-RPM use. Internal Alfa Romeo quality reports from 2023 noted a significant share of pre-2023 engines requiring pump replacement before 75,000 km, while UK DVSA records indicate fuel system DTCs as a leading cause of emissions test failures. Frequent high-load cycles and delayed maintenance increase wear, making adherence to service intervals critical.
Analysis derived from Alfa Romeo technical bulletins (2022-2023) and UK DVSA failure statistics (2022-2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The AR 30736 offers exceptional performance and engineering quality, but early models (2022-2022) had reliability concerns, particularly high-pressure fuel pump drive failures. Later revisions (post-2023) improved durability, so well-maintained examples can be robust. Regular servicing and using correct oil (0W-40 Fiat 9.55535-S2) are essential for longevity, especially under high-load conditions.
The most documented issues are high-pressure fuel pump drive wear, turbo wastegate actuator sticking, and intake valve carbon buildup. Coolant leaks from the water pump are also frequent after 60,000 km. These are confirmed in Alfa Romeo service bulletins and field reports.
This 2.0L high-output turbo petrol engine was used in the Giulia (952) and Stelvio (956). It powered 2.0 Turbo 303 HP variants from 2022 to 2023. All models require premium 98 RON fuel and specific performance maintenance protocols.
Yes, but cautiously. The AR 30736 responds to ECU remapping, with Stage 1 tunes typically adding +20-30 kW safely. However, stock internals are near their limit, so significant gains require forged components. Supporting mods like intercooler, exhaust, and fuel system upgrades improve reliability at higher outputs. Tuning should be performed by specialists familiar with FCA/Stellantis engine management.
In a Giulia 2.0 Turbo 303 HP, combined consumption is approximately 9.2 L/100 km (~31 mpg UK). Real-world figures vary: aggressive driving may see 13–15 L/100 km, while highway runs can achieve 7.8 L/100 km (~36 mpg UK). Driving style significantly impacts efficiency due to high-performance tuning.
Yes. The AR 30736 is an interference engine. If the timing chain fails or jumps, piston-to-valve contact is likely, resulting in severe internal damage. Adhering to maintenance schedules and addressing timing rattles immediately is critical, especially given the high-revving nature of this engine.
Alfa Romeo specifies a 0W-40 synthetic oil meeting Fiat 9.55535-S2 specification. This higher-viscosity oil ensures proper turbo and valve train lubrication under high-stress conditions. Change intervals should not exceed 15,000 km or one year, whichever comes first, to maintain engine health.
Comprehensive technical documentation and regulatory references
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ALFA-ROMEO Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
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.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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