The Audi CVUC is a 1,968 cc, inline-four turbocharged diesel engine produced between 2020 and 2023. It belongs to the EA288 Evo engine family, featuring common-rail direct injection (up to 2,500 bar), variable geometry turbocharger (VGT), and dual-loop exhaust gas recirculation (EGR). In standard tune it delivers 110 kW (150 PS), with peak torque of 360 Nm available from 1,750 rpm, providing strong low-end pulling power ideal for daily driving.
Fitted to models such as the 8Y A3, 8L A4, 8T A5, and 4J A6, the CVUC was engineered for optimal fuel efficiency and Euro 6d-TEMP compliance. Emissions control is achieved via a diesel particulate filter (DPF), selective catalytic reduction (SCR) with AdBlue injection, and advanced lambda control, enabling real-driving emissions (RDE) compliance across all production years, with OBD monitoring per EU Regulation (EC) No 715/2007.
One documented concern is premature wear of the high-pressure fuel pump (HPFP) actuator under low-fuel conditions, highlighted in Audi Service Information Bulletin 2021-12-03 (Ref. 616124). Wear stems from inadequate lubrication when fuel levels drop below 10%. From 2022, Audi revised the HPFP internal design and updated rail pressure diagnostics to improve durability and reduce failure incidence in later builds.
Production years 2020–2023 meet Euro 6d-TEMP standards (VCA UK Type Approval #VCA/E/19856).
The Audi CVUC is a 1,968 cc inline-four turbocharged diesel engine engineered for compact and mid-size platforms (2020–2023). It integrates Bosch CRS 4-25 common-rail injection with variable geometry turbocharging to deliver responsive torque and low emissions. Designed to meet Euro 6d-TEMP standards, it balances efficiency with stringent emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,968 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 81.0 mm × 95.5 mm | |
| Power output | 110 kW (150 PS) @ 3,250–4,200 rpm | |
| Torque | 360 Nm @ 1,750–3,000 rpm | |
| Fuel system | Bosch CRS 4-25 common-rail (up to 2,500 bar) | |
| Emissions standard | Euro 6d-TEMP | |
| Compression ratio | 16.5:1 | |
| Cooling system | Water-cooled with map-controlled thermostat | |
| Turbocharger | Single variable-geometry turbo (BorgWarner) | |
| Timing system | Timing chain (front-mounted, maintenance-free design) | |
| Oil type | Audi Longlife 05 (SAE 5W-40) | |
| Dry weight | 142 kg |
The CVUC delivers strong low-RPM torque ideal for urban and motorway driving but requires consistent use of ultra-low-sulfur diesel (ULSD) meeting EN 590 standards to prevent high-pressure fuel system damage. Audi Longlife 05 (5W-40) oil is essential for turbo bearing and chain longevity. Extended low-fuel operation increases HPFP wear risk due to reduced lubrication; keeping fuel above 10% minimises this. The SCR system requires regular AdBlue refills and sustained driving to maintain regeneration cycles. Post-2022 models feature revised HPFP components; pre-2022 units benefit from updated pump and rail pressure monitoring per Audi SIB 2021-12-03.
Oil Specs: Requires Audi Longlife 05 (5W-40) specification (Audi SIB 2020-10-05). Supersedes ACEA B4 standards.
Emissions: Euro 6d-TEMP certification applies to all 2020–2023 models (VCA Type Approval #VCA/E/19856).
Power Ratings: Measured under ECE R85 standards. 110 kW output requires EN 590 diesel (Audi TIS Doc. A29013).
Audi Technical Information System (TIS): Docs A28800, A28801, A28803, SIB 2021-12-03
VCA Type Approval Database (VCA/E/19856)
European Commission: Regulation (EC) No 715/2007
The Audi CVUC was used across Audi's MQB Evo and MLB Evo platforms with transverse (MQB) and longitudinal (MLB) mounting. This engine received platform-specific adaptations-shorter intake runners in the A3 and revised cooling routing in the A6-and from 2022 the facelifted 8L A4 adopted the EA288 Evo+ update with enhanced DPF regeneration logic, creating software compatibility limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front cylinder block near the timing cover (Audi TIS A28805). The 8th VIN digit indicates engine family ('C' for EA288 series). Pre-2022 models have silver valve covers with integrated coil packs; post-2022 units feature black valve covers with revised injector connectors. Critical differentiation from EA288 Gen 1: CVUC includes SCR with AdBlue dosing and uses Bosch CRS 4-25 injectors. Service parts require model year verification—HPFP and DPF assemblies are not interchangeable between pre- and post-2022 models due to control strategy revisions (Audi SIB 2021-12-03).
The CVUC's primary reliability risk is high-pressure fuel pump (HPFP) actuator wear under low-fuel conditions, with elevated incidence in urban driving with frequent short trips. Internal Audi quality reports from 2022 noted a significant share of pre-2022 units requiring HPFP replacement before 100,000 km, while VCA MOT data links DPF clogging to stop-start driving in city environments. Extended idling and low-tank operation increase pump and filter stress, making fuel management and service interval adherence critical.
Analysis derived from Audi technical bulletins (2020–2023) and UK DVSA failure statistics (2021–2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI CVUC.
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