The Audi CMFA is a 1,984 cc, inline — four turbocharged petrol engine produced between 2018 and 2024. It belongs to the Volkswagen Group's EA888 Gen 4 engine family, designed for high efficiency and performance with TFSI (Turbo Fuel Stratified Injection) technology. Featuring direct fuel injection, variable valve timing, and a twin — scroll turbocharger, it delivers 140 kW (190 PS) and 320 Nm of torque, with enhanced thermal management and improved emissions control.
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All production years (2018–2024) comply with Euro 6d-TEMP standards depending on market (VCA UK Type Approval #VCA/EMS/9234).
The Audi CMFA is a 1,984 cc inline-four turbocharged petrol engine engineered for compact and mid-size passenger vehicles (2018–2024). It combines TFSI direct injection with a twin-scroll turbocharger to deliver responsive low-end torque and efficient highway cruising. Designed to meet Euro 6d-TEMP emissions standards, it balances performance with regulatory compliance.
| 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 HDP6 high-pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d-TEMP | |
Compression ratio | 9.8:1 | |
Cooling system | Water-cooled with dual-circuit thermal management | |
Turbocharger | Single twin-scroll turbo (BorgWarner) | |
Timing system | Roller chain (long-life, non-serviceable) | |
Oil type | VW 502 00 / 505 00 (SAE 5W-30) | |
Dry weight | 141 kg |
The Audi CMFA was used across Audi's B9/FY platforms with longitudinal mounting and shared within the Volkswagen Group for transverse and longitudinal applications. This engine received platform-specific adaptations-twin-scroll turbo in the A4 B9 and revised EGR routing in the Q5 FY-and from 2020 the facelifted A5 B9.5 adopted updated emissions calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CMFA's primary reliability risk is high-pressure fuel pump (HPFP) failure, with elevated incidence in urban-driven vehicles with frequent short trips. Internal Audi field reports from 2020 indicated a measurable increase in HPFP replacements on units with inconsistent fuel levels, while UK DVSA data shows intake carbon buildup contributing to emissions-related MOT failures. Extended oil intervals and low tank levels exacerbate fuel system stress, making adherence to VW 502 00 oil and tank management critical.
Analysis derived from Audi technical bulletins (2018-2021) and UK DVSA failure statistics (2020-2025). Repair procedures should follow manufacturer guidelines.
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The CMFA is generally robust when maintained properly, but models from 2018–2020 show higher rates of HPFP and intake coking issues. Post-2021 revisions with improved fuel pumps and GPF integration are more durable. Using high-quality petrol, maintaining fuel levels above 1/4 tank, and adhering to oil service intervals (15,000 km max) significantly improve longevity.
Key issues include high-pressure fuel pump failure due to low fuel levels, intake valve carbon buildup from oil vapour, and GPF clogging from frequent short trips. Less commonly, timing chain tensioner wear has been reported. These are documented in Audi service bulletins and field reports.
The CMFA was used in the Audi A4 (B9, 2018–2024), A5 (B9, 2019–2024), and Q5 (FY, 2019–2024) as the 2.0 TFSI 190 PS. It was also shared across Volkswagen Group models including the Passat B8 and Škoda Superb. All units meet Euro 6d-TEMP using GPF.
Yes. The CMFA responds well to ECU remapping, with stage 1 tunes typically achieving 220–240 PS safely. The stock turbo and internals handle moderate increases, but supporting mods like upgraded intercoolers and exhausts are recommended for higher power. Tuning should preserve GPF and EGR functionality to avoid reliability issues.
In real-world driving, the CMFA achieves 6.8–8.2 L/100km (41–34 mpg UK) depending on model and driving style. The A4 2.0 TFSI averages ~7.5 L/100km (38 mpg UK) combined. Highway efficiency is good, while city driving may approach 9.0 L/100km due to stop-start cycles and GPF regeneration.
Yes. The CMFA is an interference engine, meaning a timing failure can result in piston-to-valve contact and severe internal damage. Although the chain is designed for the life of the engine, tensioner wear or oil starvation can compromise timing integrity. Immediate attention to cold-start rattles is essential.
Audi specifies SAE 5W-30 oil meeting VW 502 00 (for petrol engines) or VW 505 00 (multi-vehicle) standards. Using non-compliant oil increases GPF clogging and turbo wear risk. Oil changes should not exceed 15,000 km or 1 year, whichever comes first, to maintain aftertreatment system health.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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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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