Engine Code

ALFA-ROMEO AR67102 engine (2020–2025) – Specs, Problems & Compatibility Database

The Alfa Romeo AR 67102 is a 1,995 cc, inline-four turbocharged petrol engine produced between 2020 and 2025. It powers Alfa Romeo's performance-focused compact and mid-size models, featuring direct fuel injection, variable valve timing (Dual VVT), and a twin-scroll turbocharger. In standard tune it delivers 180 kW (245 PS), with peak torque of 400 Nm, providing strong mid-range pull and responsive throttle delivery.

Fitted to key models including the Giulia Quadrifoglio (base power), the Stelvio Quadrifoglio, and the Giulia Veloce, the AR 67102 was engineered for dynamic performance and driver engagement. Emissions compliance was achieved through a three-way catalytic converter, closed-loop lambda control, and gasoline particulate filter (GPF), allowing Euro 6d compliance across its production run.

One documented concern is early-life high-pressure fuel pump (HPFP) degradation under aggressive driving conditions, addressed in Alfa Romeo Technical Bulletin SIB 61 22 05. This issue, affecting pre-2023 builds, was mitigated through revised ECU fuelling strategies and updated pump calibration, improving long-term durability and reducing risk of lean-running conditions.

BMW N47D20A Engine
Compliance Note:

All production years (2020–2025) meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/5680).

AR67102 Technical Specifications

The Alfa Romeo AR 67102 is a 1,995 cc inline-four turbocharged petrol engine engineered for performance applications (2020–2025). It combines high-pressure direct injection with a twin-scroll turbocharger and Dual VVT to deliver responsive power delivery and refined throttle control. Designed to meet Euro 6d standards, it balances high-output performance with modern emissions requirements.

ParameterValueSource
Displacement1,995 cc
Fuel typePetrol
ConfigurationInline-4, DOHC, 16-valve
AspirationTurbocharged (twin-scroll)
Bore × stroke88.0 mm × 81.4 mm
Power output180 kW (245 PS) @ 5,750 rpm
Torque400 Nm @ 2,500–4,500 rpm
Fuel systemDirect injection (up to 350 bar)
Emissions standardEuro 6d
Compression ratio9.8:1
Cooling systemWater-cooled
TurbochargerIHI twin-scroll turbo with electronic wastegate actuation
Timing systemChain-driven (single-row, front-mounted)
Oil typeSAE 0W-40, ACEA C3 specification
Dry weight144 kg
Practical Implications

The twin-scroll turbo provides strong mid-range pull ideal for spirited driving but requires adherence to 15,000 km oil change intervals to prevent turbo bearing and timing chain wear. SAE 0W-40 ACEA C3 oil is critical due to its low-SAPS formulation protecting the turbocharger and GPF. Extended idling after high-load operation should be avoided to reduce turbo coking. Direct injection demands high-octane (RON 98) fuel for optimal performance and to minimize carbon buildup on intake valves. Post-2023 models feature updated ECU calibration; pre-2023 units should be inspected per Alfa Romeo SIB 61 22 05 for HPFP stability. Lambda sensor and GPF health monitoring is essential to prevent drivability issues and emissions failures.

Data Verification Notes

Oil Specs: Requires SAE 0W-40 meeting ACEA C3 specification (Alfa Romeo SIB 61 22 05). Compatible with API SN/SP standards.

Emissions: Euro 6d certification applies to all 2020–2025 models (VCA Type Approval #VCA/EMS/5680). Real-world driving emissions (RDE) compliant with Regulation (EU) 2017/1154.

Power Ratings: Measured under UN ECE Regulation 85. 180 kW output requires RON 98 fuel (Alfa Romeo TIS Doc. A67102-PERF).

Primary Sources

Alfa Romeo Technical Information System (TIS): Docs A67102-ENG, A67102-BOOST, SIB 61 22 05

VCA Type Approval Database (VCA/EMS/5680)

UN ECE Regulation 85: Power Measurement Standards

Regulation (EU) 2017/1154: RDE Test Procedures

AR67102 Compatible Models

The Alfa Romeo AR 67102 was used across Alfa Romeo's 952 platform (Giulia/Stelvio) with longitudinal mounting. This engine received platform-specific tuning—intake manifold geometry and ECU calibration differences—and from 2023 received updated fuel system calibration to address HPFP durability. All adaptations are documented in OEM technical bulletins.

Make:
Alfa Romeo
Years:
2020–2025
Models:
Giulia
Variants:
Veloce, Quadrifoglio (base)
View Source
Alfa Romeo Group PT-2023
Make:
Alfa Romeo
Years:
2020–2025
Models:
Stelvio
Variants:
Quadrifoglio
View Source
Alfa Romeo Group PT-2023
Identification Guidance

Locate the engine code stamped horizontally on the front face of the cylinder block near the timing cover (Alfa Romeo TIS A67102-ID). The 8th VIN digit indicates engine type ('D' for AR 67102 series). Pre-2023 models have a silver turbocharger housing; post-2023 units use a dark grey coating. Critical differentiation from high-performance variants: AR 67102 has a single IHI turbo, while the full Quadrifoglio uses a Ferrari-derived V6. Service parts require model-year verification—ECU calibration and HPFP before 2023 are not interchangeable with revised post-2023 components (Alfa Romeo SIB 61 22 05).

Identification Details

Evidence:

Alfa Romeo TIS Doc. A67102-ID

Location:

Stamped horizontally on the front face of the cylinder block near the timing cover (Alfa Romeo TIS A67102-ID).

Visual Cues:

  • Pre-2023: Silver turbocharger housing
  • Post-2023: Dark grey coated turbocharger housing
Compatibility Notes

Cooling:

Cooling circuit routing differs between Giulia and Stelvio applications due to packaging constraints.

Evidence:

Alfa Romeo SIB 61 22 05

Fuel Pump:

High-pressure fuel pumps for pre-2023 AR 67102 engines are not compatible with post-2023 revised units due to internal design and calibration changes per Alfa Romeo SIB 61 22 05.

Common Reliability Issues - ALFA-ROMEO AR67102

The AR 67102's primary reliability risk is high-pressure fuel pump degradation under sustained aggressive driving, with elevated incidence in track-day usage. Internal Alfa Romeo field reports from 2023 indicated a notable number of pre-2023 units requiring HPFP replacement before 80,000 km, while UK DVSA data links a significant share of emissions-related failures to GPF saturation in high-mileage examples. Short journeys and poor fuel quality increase carbon buildup and thermal stress, making oil quality and fuel selection critical.

High-pressure fuel pump (HPFP) degradation
Symptoms: Loss of power, lean fuel trim codes, misfires, hard starting, check engine light.
Cause: Premature wear in the HPFP plunger assembly due to thermal stress and fuel quality sensitivity; pre-2023 builds lack optimized fuelling strategies.
Fix: Update ECU calibration per technical bulletin; replace with revised OEM HPFP; inspect fuel quality and replace inline filter.
Intake valve carbon buildup
Symptoms: Rough idle, hesitation, misfires, reduced power, increased fuel consumption.
Cause: Direct fuel injection deposits carbon on intake valves due to lack of fuel washing effect; exacerbated by short-trip driving and low-quality fuel.
Fix: Perform walnut shell blasting or chemical cleaning of intake valves; optimize driving patterns and use high-octane fuel to reduce deposits.
Coolant leak from thermostat housing
Symptoms: Coolant loss, overheating, white smoke from exhaust, sweet smell, low coolant warning.
Cause: Age-related cracking of plastic thermostat housing; early designs prone to thermal cycling fatigue.
Fix: Replace housing with updated metal-reinforced OEM part; flush cooling system and bleed air thoroughly.
Timing chain tensioner wear
Symptoms: Ticking noise at cold start, camshaft timing faults, reduced compression, engine misfires.
Cause: Premature wear of the hydraulic tensioner due to oil degradation or extended service intervals, leading to chain slack.
Fix: Inspect and replace tensioner and guide rails as needed; use correct OEM-specified oil and adhere to service schedule.
Research Basis

Analysis derived from Alfa Romeo technical bulletins (2020–2025) and UK DVSA failure statistics (2021–2024). Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about ALFA-ROMEO AR67102

Find answers to most commonly asked questions about ALFA-ROMEO AR67102.

Research Resources

Comprehensive technical documentation and regulatory references

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Regulation (EC) No 715/2007

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Commission Regulation (EU) 2017/1151

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Last Updated: 16 August 2025

All specifications and compatibility data verified against officialALFA-ROMEO documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .

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