The Audi CJGA is a 1,984 cc, inline — four turbocharged petrol engine produced between 2017 and 2023. It belongs to the Volkswagen Group's EA888 Gen 4 engine family, featuring direct fuel injection (TSI), turbocharging, and dual overhead camshafts (DOHC). In standard tune it delivers 140 kW (190 PS) and 320 Nm of torque, offering strong performance and improved thermal efficiency across transverse — mounted platforms.
Fitted to models such as the A3 (8V), A4 (B9), and Q3 (F…
All production years (2017–2023) meet Euro 6d-TEMP and later Euro 6d standards .
The Audi CJGA is a 1,984 cc inline-four turbocharged petrol engine engineered for compact and mid-size transverse applications (2017–2023). It combines direct fuel injection with a single-scroll turbocharger to deliver responsive acceleration and improved fuel efficiency. Designed to meet Euro 6d-TEMP and Euro 6d standards, it balances performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 82.5 mm × 92.8 mm | |
Power output | 140 kW (190 PS) @ 4,200–6,000 rpm | |
Torque | 320 Nm @ 1,500–4,000 rpm | |
Fuel system | Bosch HDEV6 high-pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d-TEMP (pre-2020), Euro 6d (post-2020) | |
Compression ratio | 9.8:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single-scroll turbo (IHI VF45) | |
Timing system | Timing chain (lifetime service interval) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 137 kg |
The Audi CJGA was used across Audi's 8V, B9, and F3 platforms with transverse mounting. This engine received platform-specific adaptations—reinforced engine mounts in the Q3 and revised cooling layouts in the A4—and from 2020 the facelifted A3 8V.5 adopted updated EGR and intake calibration, creating interchange limits. 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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The CJGA is generally robust when maintained properly, but pre-2020 models are prone to fuel injector degradation. Later revisions with updated injectors and ECU calibration show improved durability. Regular intake valve cleaning, use of correct oil (VW 502 00/505 00), and adherence to 15,000 km service intervals are essential for long-term reliability.
Key issues include fuel injector degradation, intake valve carbon buildup due to direct injection, turbo wastegate sticking, and ignition coil failure. These are documented in Audi service bulletins and field reports. Misfires and hesitation are common in high-mileage examples with neglected maintenance.
The CJGA 2.0 TFSI 190 PS was used in the A3 (8V), A4 (B9), and Q3 (F3) from 2017 to 2023. It was phased out in favour of EA888 Gen 5 engines post-2023. All models meet Euro 6d-TEMP and later Euro 6d emissions standards.
Aftermarket ECU tuning is common on the CJGA 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.
In real-world driving, expect 7.5–9.0 L/100km (31–37 mpg UK) in mixed conditions. Highway driving can achieve ~6.5 L/100km (43 mpg UK). Fuel economy depends on driving style, transmission type, and use of premium fuel.
Yes, the CJGA is an interference engine. If the timing chain fails, pistons can strike open valves, causing severe internal damage. This makes regular inspection of chain tensioner and guides absolutely critical.
Audi specifies VW 502 00 / 505 00 (SAE 5W-30) oil. This formulation ensures proper lubrication for the turbocharger and fuel system. Oil must be changed every 15,000 km or annually to maintain engine longevity and performance.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
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.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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