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 .
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 | Refer to vehicle handbook / manufacturer specification | |
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.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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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.
Aftermarket ECU tuning is common on the 939A7000 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
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.
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UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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