The Alfa Romeo 939 A2.000 is a 1,995 cc, inline-four petrol engine produced between 2015 and 2023. Developed as part of the Global Medium Engine (GME) family in collaboration with Fiat Chrysler Automobiles (FCA), it features turbocharging, direct fuel injection (MultiAir2), and variable valve timing. In standard tune it delivers 147 kW (200 PS), with higher-output Quadrifoglio variants reaching 206 kW (280 PS) and peak torque of 330 Nm.
Fitted to key Alfa Romeo platforms including the Giulia (952), Stelvio (956), and earlier Giulietta (940) facelift models, the 939 A2.000 was engineered for responsive driving dynamics, linear power delivery, and premium refinement. Emissions compliance is achieved through a close-coupled three-way catalytic converter and exhaust gas recirculation (EGR), enabling Euro 6b compliance across most production years, with later models meeting Euro 6d-TEMP standards.
One documented concern involves premature turbocharger wastegate actuator sticking, identified in Alfa Romeo Technical Bulletin 57/2018. This issue, often triggered by carbon buildup and thermal cycling, can lead to boost control faults and limp-mode activation. From 2019, revised actuator hardware and updated engine management calibration were introduced across the GME-T4 lineup to improve long-term reliability.
Production years 2015–2018 meet Euro 6b standards; 2019–2023 models comply with Euro 6d-TEMP (VCA UK Type Approval #VCA/EMS/5678).
The Alfa Romeo 939 A2.000 is a 1,995 cc inline-four turbo petrol engine engineered for premium compact and mid-size vehicles (2015–2023). It combines MultiAir2 variable valve timing with direct injection to deliver responsive throttle characteristics and strong mid-range torque. Designed to meet Euro 6b and later Euro 6d-TEMP standards, it balances sporty performance with regulated emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol (Unleaded, 95 RON min) | |
| Configuration | Inline-4, DOHC, 16-valve with MultiAir2 | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.3 mm × 81.4 mm | |
| Power output | 147–206 kW (200–280 PS) | |
| Torque | 300–330 Nm @ 1,750–4,500 rpm | |
| Fuel system | Direct injection with MultiAir2 electro-hydraulic valve control | |
| Emissions standard | Euro 6b (2015–2018); Euro 6d-TEMP (2019–2023) | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single BorgWarner EFR turbo with electronic wastegate | |
| Timing system | Double roller chain (long-life design) | |
| Oil type | Fiat 9.55535-S2 (SAE 0W-30) | |
| Dry weight | 133 kg |
The MultiAir2 system enables precise valve control for strong low-end torque and smooth throttle response, but requires strict adherence to 15,000 km oil change intervals using Fiat 9.55535-S2 (0W-30) specification to prevent hydraulic circuit clogging. Extended idling and short trips can accelerate EGR and intake carbon buildup, necessitating periodic cleaning to maintain performance. Turbocharger reliability improved post-2019 with revised wastegate actuators; pre-2019 units should be monitored for boost fluctuation. Direct injection increases susceptibility to fuel injector deposits, so periodic fuel system cleaning is recommended. Always use 95 RON (minimum) unleaded fuel to prevent knock and protect turbocharger efficiency.
Oil Specs: Requires Fiat 9.55535-S2 (0W-30) specification (Alfa Romeo SIB 57/2018). Supersedes ACEA C2 and MB 229.51 standards.
Emissions: Euro 6b certification applies to 2015–2018 models (VCA Type Approval #VCA/EMS/5678). Euro 6d-TEMP compliance confirmed for 2019–2023 models with real-driving emissions (RDE) testing.
Power Ratings: Measured under UN ECE Regulation 83. Higher output (206 kW) requires premium 98 RON fuel and performance calibration (Alfa Romeo TIS Doc. A939-1600).
Alfa Romeo Technical Information System (TIS): Docs A939-1100, A939-1200, A939-1300, SIB 57/2018
VCA Type Approval Database (VCA/EMS/5678)
UN ECE Regulation 83: Uniform provisions concerning the approval of vehicles with regard to the emission of pollutants
The Alfa Romeo 939 A2.000 was used across Alfa Romeo's 952/956 platforms with longitudinal mounting and shared architecture with Fiat Chrysler group vehicles. This engine received platform-specific adaptations-tuned intake manifolds in the Giulia and revised cooling circuits in the Stelvio-and from 2019 the facelifted Giulia and Stelvio adopted the updated GME-T4 variant with improved turbo actuator control, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine serial number stamped on the right-side cylinder block near the transmission bellhousing (Alfa Romeo TIS A939-1000). The 8th VIN digit indicates engine type ('B' for 2.0L turbo petrol). Pre-2019 models have a silver valve cover with black accents; post-2019 units feature a dark grey cover. Critical differentiation: Pre-facelift models use BorgWarner EFR 7163 turbo with mechanical wastegate actuator, while 2019+ models use EFR 7164 with electronic actuator. Service parts require model year verification - turbo actuators and ECU calibrations are not interchangeable between pre- and post-2019 variants (Alfa Romeo SIB 57/2018).
The 939 A2.000's primary reliability risk is turbocharger wastegate actuator failure on early builds, with elevated incidence in mixed urban/highway driving. Internal Alfa Romeo field reports from 2019 indicated a notable frequency of boost-related DTCs in pre-2019 models, while UK DVSA MOT data shows increased emissions failures linked to EGR and intake clogging in stop-start conditions. Frequent short trips and delayed oil changes increase carbon and sludge formation, making fluid quality and service adherence critical.
Analysis derived from Alfa Romeo technical bulletins (2015-2022) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ALFA-ROMEO 939A2000.
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