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), Mi…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The 939 A7.000 offers engaging performance and decent efficiency, but early models (2015–2017) had reliability concerns, particularly MultiAir actuator failures. Later revisions (post-2018) improved actuator durability, so well-maintained examples can be reliable. Regular servicing and using high-quality oil (5W-30 C2/C3) greatly enhance longevity.
The most frequent issues are MultiAir actuator degradation (causing misfires), lambda sensor drift (leading to poor fuel economy), and intake carbon buildup. Other concerns include coolant leaks from the thermostat housing and occasional throttle body faults. These are documented in Alfa Romeo service bulletins and technical databases.
This 1.8L petrol engine was used in the Giulietta (940), MiTo (380), and early pre-facelift Giulia (952) models from 2015–2017. It was also shared with Fiat (500L) and Lancia (Ypsilon) in detuned form. All variants comply with Euro 6b emissions standards.
Yes, but with limitations. ECU remaps can yield +15–25 kW on stage 1, though gains are modest due to the naturally aspirated design. Supporting mods like intake and exhaust upgrades help. However, the MultiAir system is sensitive, so tuning must preserve valve timing integrity to avoid damage.
Moderate. In a Giulietta 1.8 160 HP (2016), typical consumption is ~9.2 L/100km (city) and ~5.8 L/100km (highway), or about 40 mpg UK combined. Real-world figures vary with driving style, but expect 35–45 mpg (UK) on mixed roads for a well-maintained unit.
Yes. The 939 series is an interference engine. If the timing chain fails or skips, pistons can collide with open valves, resulting in severe internal damage. Chain maintenance is essential—any unusual noise from the timing cover should be investigated immediately.
Alfa Romeo specifies SAE 5W-30 C2/C3 oil meeting Fiat Material Standard DGE-SE-05. Always use a low-SAPS synthetic oil suitable for petrol engines with aftertreatment systems. Change intervals should not exceed 15,000 km to ensure proper MultiAir system lubrication and prevent sludge buildup.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Vehicle Certification Agency (VCA)
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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