The Audi CJWB is a 1,968 cc, inline — four turbocharged diesel engine produced between 2018 and 2023. It belongs to the Volkswagen Group's EA288 evo engine family, featuring common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard tune, it produces 110 kW (150 PS) and 360 Nm of torque, delivering strong low — end pulling power and improved efficiency over previous generations.
Fitted to models including the B9 A…
Production years 2018–2023 meet Euro 6d-TEMP standards .
The Audi CJWB is a 1,968 cc inline-four turbo-diesel engine developed for transverse and longitudinal-platform applications (2018–2023). It combines a variable geometry turbocharger with common rail injection to deliver smooth power delivery and strong low-RPM torque. Designed to meet Euro 6d-TEMP emissions standards, it balances performance with improved fuel efficiency and reduced particulate emissions.
| 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 | Common rail (Bosch CP4.2, up to 2,000 bar) | |
Emissions standard | Euro 6d-TEMP | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Variable geometry turbo (Honeywell VGT) | |
Timing system | Chain-driven (double-row, front-mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 159 kg |
The Audi CJWB was used across Audi's B9/8U platforms with both longitudinal and transverse mounting and shared with Volkswagen and SEAT under Group platform strategy. This engine received platform-specific calibrations-tuned intake manifolds in the A5 and revised cooling in the Q3-and from 2020 the facelifted A4 Avant adopted revised emissions mapping, creating minor software incompatibilities. 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 CJWB delivers strong torque and good efficiency, but early models (2018–2019) had reliability concerns, particularly HPFP wear. Later revisions (post-2020) improved pump durability, so well-maintained examples can be robust. Regular servicing and using high-quality oil (5W-30 Audi Longlife 05) significantly enhance longevity.
The most common issues are high-pressure fuel pump wear, turbo actuator sticking, EGR/intake carbon buildup, and coolant leaks from the water pump. These are documented in Audi service bulletins and supported by DVSA failure data. Preventative maintenance is key to avoiding major repairs.
The CJWB 2.0 TDI was used in the Audi A4 (B9), A5 (B9), and Q3 (8U) between 2018 and 2023. It was also shared with Volkswagen (Tiguan B8.5 2.0 TDI) under the VW Group platform strategy. All variants meet Euro 6d-TEMP emissions standards.
Aftermarket ECU tuning is common on the CJWB 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 real-world driving, the CJWB achieves approximately 5.2 L/100 km (city), 4.4 L/100 km (highway), or about 54–60 mpg UK combined. The A4 2.0 TDI typically returns better economy than the Q3 due to lower weight. Expect 50–60 mpg (UK) depending on driving style and conditions.
Yes. The CJWB is an interference engine. If the timing chain fails or jumps, the pistons can strike the open valves, causing catastrophic engine damage. Chain maintenance is critical—any unusual noise from the front of the engine should be investigated immediately.
Audi specifies 5W-30 synthetic oil meeting Audi Longlife 05 specification. Use only VW 505 01-compliant oil and change it every 15,000 km or annually to ensure HPFP lubrication and minimize carbon buildup. Extended intervals increase wear risk.
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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