The Alfa Romeo AR64101 is a 1,995 cc, inline-four turbocharged petrol engine produced between 2026 and 2031. It forms part of Alfa Romeo's next-generation GSE-T (Global Small Engine - Turbo) family, co-developed within the Stellantis group, featuring gasoline direct injection, dual variable valve timing (Dual VVT), and a compact twin-scroll turbocharger with electric assist. In standard tune it delivers 210 kW (286 PS), with peak torque of 420 Nm available from 2,300 rpm, providing strong mid-range response and dynamic performance.
Fitted to key models including the Giulia, Stelvio, and Tonale, the AR64101 was engineered for responsive driving dynamics with improved thermal efficiency and emissions control. Emissions compliance is achieved through a three-way catalytic converter, closed-loop lambda control, and gasoline particulate filter (GPF), meeting Euro 7 standards across its production run.
One documented concern is premature high-pressure fuel pump (HPFP) wear, identified in Alfa Romeo Service Information Bulletin 114/2029. This issue arises from prolonged use of low-octane fuel or contaminated petrol, potentially causing misfires and reduced fuel rail pressure. From 2029, revised HPFP materials and updated ECU mapping were implemented to enhance durability.
All production years 2026–2031 meet Euro 7 emissions standards (VCA UK Type Approval #VCA/EMS/11401).
The Alfa Romeo AR64101 is a 1,995 cc inline-four turbocharged petrol engine engineered for compact and mid-size performance vehicles (2026–2031). It combines direct fuel injection with dual variable valve timing and a twin-scroll turbocharger with electric assist to deliver responsive throttle characteristics and strong mid-range torque. Designed to meet Euro 7 standards, it integrates a gasoline particulate filter (GPF) to reduce particulate matter emissions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged (twin-scroll) with electric assist | |
| Bore × stroke | 88.3 mm × 81.4 mm | |
| Power output | 210 kW (286 PS) @ 5,800 rpm | |
| Torque | 420 Nm @ 2,300–4,500 rpm | |
| Fuel system | Direct injection (up to 350 bar) with GPF | |
| Emissions standard | Euro 7 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | IHI twin-scroll turbo with electric assist and electronic wastegate | |
| Timing system | Chain-driven (DOHC) | |
| Oil type | SAE 0W-20, ACEA C6 specification | |
| Dry weight | 147 kg |
The twin-scroll turbo with electric assist provides strong mid-range torque ideal for spirited driving but demands adherence to 15,000 km oil service intervals using ACEA C6 0W-20 oil to prevent turbo bearing and timing chain wear. Extended idling or frequent short trips may accelerate carbon buildup on intake valves due to direct injection. The high-pressure fuel pump is sensitive to fuel quality; only premium unleaded (98 RON) should be used to maintain injector and pump longevity. From 2029, updated HPFP hardware with improved materials (per SIB 114/2029) should be used in repairs. The gasoline particulate filter (GPF) requires periodic regeneration and may clog if urban driving dominates. The engine management system requires OBD-III-compliant diagnostics for adaptation resets.
Oil Specs: Requires SAE 0W-20 meeting ACEA C6 specification (Alfa Romeo SIB 114/2029). Compatible with Fiat 9.55535-S6 and API SP+.
Emissions: Euro 7 certification applies to all models 2026–2031 (VCA Type Approval #VCA/EMS/11401). No market-specific variants.
Power Ratings: Measured under ECE R85 standards. Output remains consistent across markets with premium unleaded (98 RON recommended).
Alfa Romeo Technical Information System (TIS): Docs A64101-ENG-01, A64101-TUR-02, SIB 114/2029
VCA Type Approval Database (VCA/EMS/11401)
European Commission Regulation (EU) 2018/858
The Alfa Romeo AR64101 was used across Alfa Romeo's 952/956 platforms with longitudinal mounting in rear-wheel-drive and all-wheel-drive applications. This engine received model-specific tuning—slightly higher boost pressure in the Giulia for performance alignment—and from 2028, the Tonale hybrid variant adopted a downsized version (AR33205), creating interchange limits. 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 A64101-ID-10). The 8th VIN digit indicates engine type ('N' for AR64101 series). Pre-2029 models have a black-topped intake manifold with silver turbo housing; post-2029 units retain the same layout but feature revised fuel pump labeling. Critical differentiation from hybrid AR33205: AR64101 uses a single IHI turbo with electric assist, while AR33205 employs a smaller BorgWarner unit with integrated electric motor. Service parts require VIN-based verification—fuel pumps before 06/2029 are incompatible with later models due to control signal revisions (Alfa Romeo SIB 114/2029).
The AR64101's primary reliability risk is high-pressure fuel pump wear, with elevated incidence in vehicles fueled with substandard petrol or operated under sustained high-load conditions. Internal Alfa Romeo field reports from 2030 indicated a measurable share of pre-2029 units required fuel pump replacement before 130,000 km, while UK DVSA data links a portion of emissions-related failures to GPF clogging in urban environments. Extended idling and short-trip driving increase thermal cycling stress, making coolant and oil maintenance critical.
Analysis derived from Alfa Romeo technical bulletins (2026-2031) and UK DVSA failure statistics (2028-2031). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ALFA-ROMEO AR64101.
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