The Audi CMGA is a 1,984 cc, inline — four turbocharged petrol engine produced between 2019 and 2023. It belongs to the Volkswagen Group's EA888 Gen 4 engine family, designed for performance and efficiency in transverse — mounted applications. Featuring direct fuel injection (TSI), variable valve timing (VVT), and a twin — scroll turbocharger, it delivers 140 kW (190 PS) and 320 Nm of torque, offering responsive performance and smooth power delivery.
Fitted to models suc…
All production years (2019–2023) comply with Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/89013).
The Audi CMGA is a 1,984 cc inline-four turbocharged petrol engine engineered for compact and mid-size models (2019–2023). It combines TSI direct injection with a twin-scroll turbocharger and integrated exhaust manifold to deliver responsive performance and strong low-RPM torque. Designed to meet Euro 6d-TEMP standards, it balances everyday drivability with stringent emissions requirements.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (twin-scroll) | |
Bore × stroke | 82.5 mm × 92.8 mm | |
Power output | 140 kW (190 PS) @ 4,200–6,000 rpm | |
Torque | 320 Nm @ 1,500–4,200 rpm | |
Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
Emissions standard | Euro 6d-TEMP | |
Compression ratio | 11.7:1 | |
Cooling system | Water-cooled, dual-circuit with electric coolant pump | |
Turbocharger | Single twin-scroll turbo (BorgWarner), water-cooled intercooler | |
Timing system | Chain-driven (front-mounted, two-stage) | |
Oil type | VW 504 00 / 505 00 (SAE 5W-30) | |
Dry weight | 128 kg |
The Audi CMGA was used across Audi's 8Y/B9/8U platforms with transverse mounting in front-wheel-drive variants and longitudinal in quattro models. This engine received platform-specific adaptations-integrated exhaust manifold in the A3 8Y and revised cooling layout in the Q3 8U-and from 2021 the facelifted A4 B9.5 adopted updated ECU calibration with enhanced emissions monitoring, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CMGA's primary reliability risk is timing chain tensioner wear, particularly in early-build units, with elevated incidence in cold climates and short-trip driving. Audi's internal field reports from 2022 indicated over 16% of pre-2021 units required tensioner replacement before 140,000 km, while UK DVSA data shows increased engine-related MOT failures in stop-start petrol vehicles. Infrequent oil changes and low oil quality exacerbate wear, making adherence to service intervals and correct oil specification critical.
Analysis derived from Audi technical bulletins (2019-2023) and UK DVSA failure statistics (2019-2023). 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 CMGA is generally reliable when maintained properly, though early units (2019-2021) are prone to timing chain tensioner wear. Post-2021 revisions with updated tensioners and oil calibration improve durability. Regular oil changes with VW 504 00/505 00 oil and intake valve cleaning significantly extend service life. Well-maintained engines can exceed 200,000 km.
The most frequent issues are timing chain tensioner wear, intake valve coking due to direct injection, turbo wastegate sticking, and coolant leaks from the thermostat housing. These are documented in Audi service bulletins. Using correct oil and regular servicing reduces occurrence.
The CMGA engine was used in the Audi A3 (8Y, 2020–2023), A4 (B9, 2019–2023), and Q3 (8U, 2019–2023) as the 2.0 TFSI 190 PS variant. It replaced earlier EA888 Gen 3 units and was phased out in favour of newer petrol engines. All models comply with Euro 6d-TEMP and include updated emissions monitoring.
Yes, the CMGA responds well to ECU remapping. Stage 1 tunes typically yield +40–60 kW safely, as the stock turbo and internals handle increased boost. Some tuners offer up to 245 PS with supporting mods. However, over-tuning can accelerate timing and turbo wear, so conservative tuning and maintenance are advised.
Good for its performance level. In an A4 2.0 TFSI (190 PS), combined consumption is ~6.8 L/100km (~41 mpg UK). Highway driving achieves ~6.0 L/100km (~47 mpg UK), while city use ranges 7.8–8.7 L/100km (~32–36 mpg UK). Real-world figures depend on driving style, but 35–45 mpg UK is typical for mixed use.
Yes. The CMGA is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic internal damage. The chain is durable but should be inspected if rattling occurs, especially on cold start. Any timing-related noise warrants immediate inspection.
Audi specifies VW 504 00 / 505 00 (SAE 5W-30) synthetic oil. Change intervals should not exceed 15,000 km or 1 year. This oil is critical for turbo, timing chain, and fuel system longevity. Using non-compliant oil increases wear and voids emissions-related warranty coverage.
Comprehensive technical documentation and regulatory references
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AUDI Official Site
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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
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