The Alfa Romeo AR 30755 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 St…
All production years (2022–2023) comply with Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/30755).
The Alfa Romeo AR 30755 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 Alfa Romeo AR 30755 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.
The AR 30755'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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The AR 30755 offers strong performance and responsiveness, but early models (2022–2022) had reliability concerns, particularly turbo wastegate and injector issues. Later revisions (post-2022) improved actuator durability and ECU calibration. Well-maintained examples with regular oil changes and quality fuel can achieve high mileage. Using TOP TIER petrol and adhering to service intervals greatly enhances longevity.
The most documented issues are turbocharger wastegate actuator sticking, direct injector coking, and coolant leaks from the thermostat housing. Secondary concerns include timing chain rattle on early units and occasional cam phaser faults. These are addressed in Alfa Romeo service bulletins, with updated parts available for critical components.
This 2.0L turbo petrol engine was used in the Giulia (952) and Stelvio (956) models from 2022 to 2023. It powered the 190 HP variants across these lines, with longitudinal mounting in both vehicles. No cross-manufacturer usage is documented.
Yes. The AR 30755 responds well to ECU remapping. Stage 1 tunes typically achieve 220–240 HP safely, as the stock turbo and internals handle moderate overboost. Supporting mods like intercooler and exhaust improve reliability at higher outputs. Tuning should preserve OEM safety parameters and use high-octane fuel to prevent knock.
In mixed driving, expect 8.5–10.0 L/100km (28–33 mpg UK). Highway efficiency reaches ~7.0 L/100km (~40 mpg UK), while city driving may exceed 12 L/100km (~23 mpg UK). Real-world figures depend heavily on driving style. The engine's turbo efficiency helps, but aggressive use reduces economy significantly.
Yes. The AR 30755 is an interference engine. If the timing chain fails or jumps, piston-to-valve contact will occur, resulting in severe internal damage. Chain maintenance and oil condition are critical. Any cold-start rattle should be diagnosed immediately to prevent catastrophic failure.
Alfa Romeo specifies SAE 5W-40 synthetic oil meeting ACEA C3 standards. Use of API SN/CF compatible oil is permitted. Change intervals should not exceed 15,000 km or 1 year. Proper oil ensures turbo bearing protection, timing chain lubrication, and particulate filter compatibility.
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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