The Audi EACB is a 1,968 cc, inline-four turbo-diesel engine produced between 2020 and 2023. It belongs to the Volkswagen Group's EA288 evo engine family, designed for optimal efficiency, low emissions, and responsive performance. Featuring common rail direct injection, variable geometry turbocharging (VGT), and a DOHC 16-valve configuration, it delivers 110 kW (150 PS) and 360 Nm of torque, with intelligent thermal management and AdBlue-based SCR enabling Euro 6d-ISC compliance.
Fitted to models such as the A4 (B9 facelift), A5, and Q5, the EACB was engineered for balanced driving dynamics and long-distance efficiency. Emissions compliance is achieved through exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, allowing it to meet strict Euro 6d-ISC standards across its production run.
One documented concern involves high-pressure fuel pump (CP4) wear when operated with low-lubricity diesel fuel. This issue is addressed in Audi Technical Service Bulletin 2021-035, which recommends use of EN 590 diesel meeting ISO 12156-1 lubricity standards. From 2021, revised pump calibration and updated ECU mapping were implemented to reduce failure rates under real-world conditions.
Production years 2020–2023 meet Euro 6d-ISC standards (VCA UK Type Approval #VCA/EMS/9123).
The Audi EACB is a 1,968 cc inline-four turbo-diesel engineered for mid-size luxury platforms (2020–2023). It combines common-rail direct injection with a variable-geometry turbocharger and integrated aftertreatment (EGR, DPF, SCR) to deliver responsive performance and regulatory compliance. Designed to meet Euro 6d-ISC standards, it balances efficiency with driving refinement.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,968 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged (VGT) | |
| Bore × stroke | 81.0 mm × 95.5 mm | |
| Power output | 110 kW (150 PS) @ 3,500–4,000 rpm | |
| Torque | 360 Nm @ 1,750–3,000 rpm | |
| Fuel system | Bosch CRS 2-20 common-rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d-ISC | |
| Compression ratio | 16.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Variable geometry turbo (Garrett GT1749V) | |
| Timing system | Timing belt (interval: 150,000 km or 5 years) | |
| Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
| Dry weight | 151 kg |
The VGT provides strong low-RPM torque ideal for urban driving but demands adherence to 15,000 km oil change intervals using VW 504 00/507 00 oil to prevent EGR and DPF clogging. The Bosch CP4 high-pressure pump requires EN 590 diesel with adequate lubricity to avoid premature wear. Timing belt replacement is critical at 150,000 km or 5 years—neglect risks interference damage. SCR-equipped models require regular AdBlue replenishment to maintain emissions compliance and prevent power limitation. Post-2021 models benefit from updated pump calibration per Audi TSB 2021-035, reducing failure risk.
Oil Specs: Requires VW 504 00 / 507 00 specification (Audi TIS Doc. A40012). Supersedes ACEA B4/C3.
Emissions: Euro 6d-ISC certification applies to all EACB models (2020–2023) (VCA Type Approval #VCA/EMS/9123).
Power Ratings: Measured under SAE J1349 standards. Output consistent across markets with ULSD (EN 590) (Audi Group PT-2025).
Audi Technical Information System (TIS): Docs A40012, A40509, TSB 2021-035
VCA Type Approval Database (VCA/EMS/9123)
SAE International: J1349 Engine Power Certification Standards
The Audi EACB was used across Audi's B9 platforms with longitudinal mounting. This engine received platform-specific adaptations-revised EGR routing in the A5 and updated cooling paths in the Q5-and from 2021 updated fuel calibration to address pump reliability, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front of the cylinder block, near the timing belt cover (Audi TIS A40012). The 8th VIN digit indicates engine type ('B' for 2.0 TDI EA288 evo family). Pre-2021 models use a Bosch CP4.1 pump; post-2021 units have revised calibration and updated ECU mapping. Critical differentiation from other EA288 variants: EACB has 360 Nm torque rating and specific ECU mapping (04L 907 117). Service parts require model-year verification—timing belts for pre-2021 B9 A4s differ from Q5 applications (Audi TIS A40012).
The EACB's primary reliability risk is high-pressure fuel pump wear, with elevated incidence in urban-driven vehicles with frequent short trips. Internal Audi field reports from 2022 indicated a significant share of pre-2021 pumps failing before 180,000 km, while UK DVSA records show increased EGR-related failures in stop-start traffic. Poor fuel quality and extended oil intervals increase pump and EGR stress, making fuel additives and timely maintenance 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 EACB.
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