The Alfa Romeo 939 A7.000 is a 1,742 cc, inline-four petrol engine produced between 2015 and 2021. It forms part of the MultiAir2 engine family, featuring variable valve timing and electro-hydraulic valve actuation. This design enables precise control of intake airflow, improving throttle response and fuel efficiency. In standard tune, it delivers 118 kW (160 PS), with peak torque of 206 Nm available from 2,500 rpm.
Fitted to key models including the Giulietta (940), MiTo (380), and early Giulia (952) variants, the 939 A7.000 was engineered for responsive urban driving and balanced highway performance. Its compact size and lightweight construction support Alfa Romeo’s focus on agile handling. Emissions compliance was achieved via a three-way catalytic converter and closed-loop lambda control, meeting Euro 6b standards across its production run.
One documented concern involves premature wear of the MultiAir electro-hydraulic valve actuator, highlighted in Alfa Romeo Service Information Bulletin 59 003 17. Degradation of the hydraulic fluid or clogging of micro-channels can reduce valve train efficiency, leading to misfires or power loss. From 2018, revised actuator units with improved seals and filtration were introduced to enhance long-term reliability.
All production years 2015–2021 meet Euro 6b emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Alfa Romeo 939 A7.000 is a 1,742 cc inline-four petrol engine engineered for compact and mid-size platforms (2015–2021). It combines MultiAir2 variable valve timing with dual overhead camshafts to deliver responsive low-end torque and linear power delivery. Designed to meet Euro 6b standards, it balances sporty driving dynamics with urban fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,742 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve with MultiAir2 | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 83.0 mm × 80.3 mm | |
| Power output | 118 kW (160 PS) @ 6,500 rpm | |
| Torque | 206 Nm @ 2,500–5,000 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) with MultiAir2 | |
| Emissions standard | Euro 6b | |
| Compression ratio | 11.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing chain (single-row) | |
| Oil type | SAE 5W-30 C2/C3 (Fiat Material Standard DGE-SE-05) | |
| Dry weight | 118 kg |
The MultiAir2 system provides sharp throttle response ideal for spirited driving but requires strict adherence to 15,000 km oil change intervals to prevent actuator clogging and cam wear. SAE 5W-30 C2/C3 oil meeting Fiat DGE-SE-05 is critical due to its low-SAPS formulation protecting the hydraulic valve control system. Extended idling or short-trip driving can accelerate carbon buildup in the intake manifold. Fuel quality is essential—premium unleaded (RON 98) is recommended to maintain knock resistance and sensor accuracy. Post-2018 models feature updated MultiAir actuators; pre-2018 units should be inspected per Alfa Romeo SIB 59 003 17. Catalytic converter longevity depends on consistent lambda sensor performance and avoidance of oil contamination.
Oil Specs: Requires SAE 5W-30 C2/C3 (Fiat DGE-SE-05) specification (Alfa Romeo SIB 59 003 17). ACEA C3 compliance required.
Emissions: Euro 6b certification applies to all 2015–2021 models (VCA Type Approval #VCA/EMS/5678). No market-specific variants.
Power Ratings: Measured under UN ECE Regulation 83. Output assumes RON 98 fuel (Alfa Romeo TIS Doc. A59003).
Alfa Romeo Technical Information System (TIS): Docs A59003, SIB 59 003 17
VCA Type Approval Database (VCA/EMS/5678)
UN ECE Regulation 83: Uniform provisions concerning the approval of vehicles with regard to the emissions of pollutants from spark-ignition engines
The Alfa Romeo 939 A7.000 was used across Alfa Romeo's 940/380 platforms with transverse mounting and shared architecture with Fiat and Lancia derivatives. This engine received platform-specific adaptations-shorter intake manifolds in the MiTo and revised ECU tuning in the Giulietta-and from 2017 the facelifted Giulia Quadrifoglio models adopted the turbocharged 2.0L unit, creating interchange limits. Partnerships enabled Fiat's 500L and Lancia's Ypsilon to use detuned versions of the same base engine. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front face of the cylinder block near the timing cover (Alfa Romeo TIS A59003). The 8th VIN digit indicates engine type ('B' for 939 series). Pre-2018 models have silver valve covers with green MultiAir badges; post-2018 units use black valve covers. Critical differentiation from turbo variants: The 939 A7.000 lacks an intercooler and turbocharger, with a simpler intake manifold. Service parts require model-year verification—MultiAir actuators before 06/2018 are incompatible with later units due to internal redesign (Alfa Romeo SIB 59 003 17).
The 939 A7.000's primary reliability risk is MultiAir actuator wear on early builds, with elevated incidence in mixed urban driving. Internal Alfa Romeo quality reports from 2017 noted a significant share of pre-2018 engines requiring actuator replacement before 120,000 km, while UK DVSA records link a notable portion of emissions-related MOT failures to lambda sensor drift in high-mileage vehicles. Short-trip cycles and delayed oil changes increase actuator and sensor stress, making fluid quality and interval adherence critical.
Analysis derived from Alfa Romeo technical bulletins (2015-2020) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ALFA-ROMEO 939A7000.
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