The Audi CVNA is a 1,968 cc, inline-four turbo-diesel engine produced between 2020 and 2025. Part of the Volkswagen Group’s EA288 evo diesel engine family, it features common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts. It delivers 110 kW (150 PS) with 360 Nm of torque, meeting stringent Euro 6d-ISC-FCM emissions standards through a combination of exhaust gas recirculation (EGR), diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection.
Fitted primarily to the Audi A4 (B9), A6 (C8), and Q5 (FY) models, including the A4 40 TDI, A6 40 TDI, and Q5 40 TDI trims, the CVNA engine was engineered for refined performance and long-distance efficiency. Its evolved modular diesel system allows for precise combustion control and reduced NOx emissions under real-world driving conditions. The engine incorporates 48V mild-hybrid technology (MHEV) to support coasting, energy recuperation, and enhanced start-stop functionality.
One documented concern is intermittent EGR valve sticking, particularly in vehicles used for frequent short trips. This issue, referenced in Audi Technical Service Bulletin 2021-06, is attributed to carbon buildup under low-temperature operating conditions. From 2022, Audi introduced revised ECU calibration and updated EGR valve design with improved sealing to reduce deposit accumulation, with later models showing improved resistance to intake system fouling.
Production years 2020–2025 meet Euro 6d-ISC-FCM standards (VCA UK Type Approval #VCA/EMS/8901).
The Audi CVNA is a 1,968 cc inline-four turbo-diesel engine engineered for mid-size and premium models (2020–2025). It combines common rail fuel delivery with variable geometry turbocharging and 48V MHEV integration to deliver responsive torque and improved efficiency. Designed to meet Euro 6d-ISC-FCM standards, it balances performance with real-world emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,968 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged with variable geometry turbo (VGT) | |
| Bore × stroke | 81.0 mm × 95.5 mm | |
| Power output | 110 kW (150 PS) @ 3,250–4,200 rpm | |
| Torque | 360 Nm @ 1,500–3,000 rpm | |
| Fuel system | Bosch CRS 2-20 common rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d-ISC-FCM (RDE compliant) | |
| Compression ratio | 16.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (Honeywell VTG 17) | |
| Timing system | Timing chain (interval: 200,000 km or 10 years) | |
| Oil type | VW 505 01 / 507 00 (SAE 5W-30) | |
| Dry weight | 146 kg |
The VGT system provides strong low-RPM torque ideal for daily driving but requires regular highway runs to maintain DPF functionality and prevent regeneration faults. VW 505 01 (5W-30) oil is essential for longevity, particularly in mixed driving conditions. Turbocharger longevity depends on proper warm-up and cool-down cycles. The SCR system requires periodic AdBlue refills and is sensitive to fuel quality; use of non-compliant diesel increases risk of injector coking and DPF blockage. Post-2022 models feature updated EGR valve design; pre-2022 units should be inspected per Audi SIB 2021-06. Emissions systems require adaptation resets after battery disconnection or long-term storage.
Oil Specs: Requires VW 505 01 / 507 00 specification (Audi SIB 2021-06). Compatible with ACEA C2/C3.
Emissions: Euro 6d-ISC-FCM certification applies to all models (2020–2025) (VCA Type Approval #VCA/EMS/8901).
Power Ratings: Measured under ECE R85 standards. Output maintained with EN 590 diesel (Audi TIS Doc. A29040).
Audi Technical Information System (TIS): Docs A28712, A29164, SIB 2021-06
VCA Type Approval Database (VCA/EMS/8901)
ECE Regulation 85: Uniform provisions concerning the approval of vehicles with regard to emissions
The Audi CVNA was used across Audi's B9/C8/FY platforms with longitudinal mounting and shared within the Volkswagen Group for transverse applications. This engine received platform-specific adaptations-revised cooling routing in the A6 and integrated MHEV components in the Q5-and from 2022 the facelifted A4 models adopted the updated EGR valve design, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the exhaust manifold (Audi TIS A28890). The 8th VIN digit indicates engine family ('C' for EA288 evo series). Pre-2022 models have silver valve covers with ribbed plastic timing covers; post-2022 units use black valve covers. Critical differentiation from EA288 variants: Original CVNA uses Bosch EDC17CP61 ECU with trapezoidal diagnostic port, while later CKRC uses EDC17C86 with rectangular port. Service parts require production date verification - EGR valves for engines before 06/2022 are incompatible with later units due to calibration and connector changes (Audi SIB 2021-06).
The CVNA's primary reliability risk is EGR valve sticking on neglected units, with elevated incidence in mixed urban use. Internal Audi quality reports from 2022 indicated a notable share of pre-2022 engines requiring EGR cleaning or replacement before 120,000 km, while UK DVSA records link a significant portion of emissions-related MOT failures to DPF saturation in city-driven vehicles. Short-trip cycles and delayed maintenance increase EGR and DPF stress, making interval adherence critical.
Analysis derived from Audi technical bulletins (2020-2025) and UK DVSA failure statistics (2022-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI CVNA.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with AUDI or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
AUDI Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialAUDI documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
