The Alfa Romeo 937 A6.000 is a 1,750 cc, inline-four turbocharged petrol engine produced between 2016 and 2021. It belongs to the Fiat Global Small Engine (GSE) family, internally designated as the "T-Jet" variant, featuring multi-point fuel injection and dual variable valve timing (Dual VVT). In standard calibration, it delivers 121 kW (165 PS) and 240 Nm of torque, engineered for responsive urban performance and agile throttle response.
Fitted to models such as the Giulietta, Stelvio, and select 144-series derivatives, the 937 A6.000 was developed to balance sporty driving dynamics with improved fuel efficiency over previous naturally aspirated units. Emissions compliance was achieved via a three-way catalytic converter and closed-loop lambda control, enabling Euro 6 certification across all production years.
One documented concern involves early carbon buildup on intake valves, noted in Alfa Romeo Service Information Bulletin (SIB) 60/21. This issue arises due to the absence of direct injection, leading to reduced airflow and potential misfires under sustained high-load operation. Later production revisions (post-2019) incorporated revised ECU mapping to increase blow-by gas recirculation frequency, mitigating deposit accumulation.
Production years 2016–2021 meet Euro 6 emissions standards (VCA UK Type Approval #VCA/EMS/5683).
The Alfa Romeo 937 A6.000 is a 1,750 cc inline-four turbocharged petrol engine designed for compact and mid-size platforms (2016–2021). It combines multi-point fuel injection with dual variable valve timing to deliver responsive mid-range power and agile throttle behavior. Designed to meet Euro 6 standards, it balances spirited performance with modern emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,750 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 84.0 mm × 78.0 mm | |
| Power output | 121 kW (165 PS) @ 5,500 rpm | |
| Torque | 240 Nm @ 2,000–4,500 rpm | |
| Fuel system | Multi-point fuel injection (MPI) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single BorgWarner turbo with vacuum-actuated wastegate | |
| Timing system | Timing chain (integrated into cylinder head) | |
| Oil type | SAE 5W-40, ACEA A3/B4 | |
| Dry weight | 128 kg |
The MPI system provides consistent fuel delivery but lacks direct injection’s cleaning effect on intake valves, leading to carbon accumulation over time—especially in stop-start driving. ACEA A3/B4 5W-40 oil is essential to support high-temperature stability and timing chain lubrication. Regular highway runs help reduce intake deposits, while delayed oil changes accelerate chain wear. Post-2019 models feature updated ECU logic to increase PCV system activity; pre-2019 units should follow Alfa Romeo SIB 60/21 for intake cleaning intervals. The turbocharged design responds well to 95 RON (or higher) fuel, improving throttle response and knock resistance.
Oil Specs: Requires SAE 5W-40, ACEA A3/B4 specification (Alfa Romeo SIB 60/21). Compatible with Fiat 9.55535-S1.
Emissions: Euro 6 certification applies to all production years (2016–2021) (VCA Type Approval #VCA/EMS/5683).
Power Ratings: Measured under ECE R85 standards. Output assumes 95 RON fuel (Alfa Romeo TIS Doc. A937-A6000).
Alfa Romeo Technical Information System (TIS): Docs A937-A6000, SIB 60/21
VCA Type Approval Database (VCA/EMS/5683)
European Commission Regulation (EC) No 715/2007
The Alfa Romeo 937 A6.000 was used across Alfa Romeo's 940/952 platforms with transverse mounting. This engine received platform-specific adaptations-shorter intake manifolds in the MiTo and revised engine mounts in the Giulietta-and from 2019 the facelifted Giulietta models adopted revised ECU mapping to improve PCV system performance, 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 transmission bellhousing (Alfa Romeo TIS A937-A6000). The 8th VIN digit indicates engine type ('B' for 1.8 Turbo GSE). Pre-2019 models have a black plastic turbo actuator linkage; post-2019 units use a sealed metallic actuator housing. Critical differentiation from non-turbo GSE: presence of intercooler piping and boost pressure sensor. Service parts require model-year verification—ECU calibrations before 2019 are not compatible with later revisions (Alfa Romeo SIB 60/21).
The 937 A6.000's primary reliability risk is intake valve carbon buildup, with elevated incidence in urban driving cycles. Internal Alfa Romeo field reports from 2020 indicated a notable share of pre-2019 units required intake cleaning before 100,000 km, while VCA MOT data links a significant portion of emissions failures to lambda sensor degradation in high-mileage examples. Frequent short trips and low-speed operation increase carbon accumulation, making regular highway runs and proper warm-up cycles critical.
Analysis derived from Alfa Romeo technical bulletins (2016–2021) and UK DVSA failure statistics (2018–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ALFA-ROMEO 937A6000.
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