The Audi CRBC is a 1,968 cc, inline — four turbocharged diesel engine produced between 2019 and 2023. It belongs to the Volkswagen Group’s EA288 evo engine family, featuring aluminium construction, common rail direct injection, and dual overhead camshafts (DOHC). In standard tune it delivered 110 kW (150 PS), with peak torque of 360 Nm available from 1,750 rpm.
Fitted to models including the B9 A4, 8W Q5, and Škoda Kodiaq, the CRBC was engineered for balanced efficiency and…
All production years (2019–2023) comply with Euro 6d standards .
The Audi CRBC is a 1,968 cc inline-four turbocharged diesel engine engineered for compact and mid-size platforms (2019–2023). It combines common rail injection with a variable geometry turbocharger (VGT) to deliver strong mid-range torque and efficient cruising. Designed to meet Euro 6d standards, it balances real-world drivability with emissions compliance through integrated SCR technology.
| 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 2-20 common rail (up to 2,000 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Honeywell variable geometry turbo (VGT) | |
Timing system | Roller chain (front-mounted; revised guides post-2019) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 142 kg |
The Audi CRBC was used across Audi's B9/8W platforms with longitudinal mounting and shared within the Volkswagen Group for longitudinal and transverse applications. This engine received platform-specific adaptations-revised cooling routing in the Q5 and transmission-specific torque calibration in the A4-and from 2020 the facelifted Q5 adopted the CRBC with SCR integration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 CRBC delivers solid efficiency and drivability, but early models (2019–2020) had reliability concerns, particularly high-pressure fuel pump wear. Later revisions (post-2020) improved pump durability with updated calibration and service guidance. Well-maintained examples with regular servicing and high-quality diesel (EN 590) can achieve over 150,000 km reliably.
Primary issues include high-pressure fuel pump wear, turbo actuator failure, and EGR/intake carbon buildup. Oil leaks from valve cover gaskets and DPF clogging in urban driving are also common. These are documented in Audi service bulletins and verified through DVSA repair data.
The CRBC was used in the Audi A4 (B9, 2019–2023) and Q5 (8W, 2019–2023) as the 2.0 TDI 150 PS variant. It was also shared across the Volkswagen Group in the Tiguan, Škoda Kodiaq, and SEAT Tarraco. All models comply with Euro 6d emissions standards (VCA / Manufacturer Specification) and use SCR with AdBlue for compliance.
Aftermarket ECU tuning is common on the CRBC platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
In an A4 2.0 TDI (110 kW), combined consumption is ~4.4 L/100km (~64 mpg UK). Highway figures can reach ~3.9 L/100km (~72 mpg UK), while city driving may exceed 5.2 L/100km (~54 mpg UK). Real-world economy depends on driving style, but 55–65 mpg UK is typical for mixed use.
Yes. The CRBC is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, resulting in severe internal damage. Immediate attention to chain rattle or warning lights is essential to prevent catastrophic engine failure.
Audi specifies SAE 5W-30 oil meeting Audi Longlife 05 specification. This low-SAPS oil is critical for fuel pump and turbo longevity. Oil changes should occur every 15,000 km or annually to maintain protection and prevent sludge or wear.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
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