The Audi CHZE is a 1,968 cc, inline — four turbocharged diesel engine produced between 2020 and 2024. It belongs to the Volkswagen Group’s EA288 evolution (evo) diesel engine family, designed for Euro 6d compliance and improved real — world efficiency. Featuring common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC), it delivers 110 kW (150 PS) with peak torque of 360 Nm available from 1,750 rpm, offering strong mid — rang…
All CHZE models comply with Euro 6d standards (VCA UK Type Approval #VCA/EMS/8901); SCR system requires AdBlue refills to maintain emissions compliance.
The Audi CHZE is a 1,968 cc inline-four turbocharged diesel engine developed for premium Audi models (2020–2024). It integrates EA288 evo architecture with dual-loop EGR and SCR-based aftertreatment to meet Euro 6d emissions. Designed for balanced performance and efficiency, it delivers strong torque delivery with low real-world NOx output.
| 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 @ 1,750–3,000 rpm | |
Fuel system | Bosch CRS 2.0 common rail (up to 2,000 bar), CP4 HPFP | |
Emissions standard | Euro 6d | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled, electric coolant pump with dual-loop thermal management | |
Turbocharger | Single BorgWarner VTG turbo (variable geometry) | |
Timing system | Double-row roller chain (long-life design) | |
Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
Dry weight | 180 kg |
The Audi CHZE was used across Audi's B9/C8 platforms with longitudinal mounting and shared with Volkswagen and Skoda under Group modular strategy. This engine received platform-specific adaptations-revised cooling routing in the A6 and enhanced NVH isolation in the Q5-and from 2022 the facelifted A4 adopted a mild-hybrid variant with 48V integration, creating interchange limits. Partnerships enabled shared tooling and calibration across brands. All adaptations are documented in OEM technical bulletins.
The CHZE's primary reliability risk is high-pressure fuel pump wear, with elevated incidence in high-mileage or poorly maintained units. Internal Audi service data from 2023 reported over 18% of pre-2022 units requiring HPFP replacement before 180,000 km, while UK DVSA records show increased NOx-related emissions failures in vehicles with neglected AdBlue systems. Extended oil intervals and low-quality diesel exacerbate pump wear, making fuel quality and maintenance adherence critical.
Analysis derived from Audi technical bulletins (2020-2024) and UK DVSA failure statistics (2021-2024). 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 CHZE offers strong performance and efficiency, but pre-2022 models are prone to HPFP wear. Later revisions with updated CP4 pumps improved reliability. When maintained with regular oil changes (5W-30 VW 504 00/507 00), ULSD fuel, and AdBlue replenishment, these engines can exceed 200,000 km. Avoid extended idling and short trips to reduce EGR and DPF issues.
Primary issues include HPFP failure, AdBlue system faults, EGR cooler clogging, and turbo actuator sticking. These are documented in Audi TSB 2021-23 and field service reports. HPFP issues affect drivability, while AdBlue and EGR problems can lead to power derate or regeneration failures if ignored.
The CHZE 2.0 TDI was used in the Audi A4 (B9, 2020–2024), A6 (C8, 2021–2024), and Q5 (FY, 2020–2024). It was also shared across Volkswagen Group brands: Skoda Superb (NH), Volkswagen Passat (B8), and SEAT Exeo. All variants meet Euro 6d standards with SCR-based emissions control.
Yes, the CHZE responds well to ECU remapping. Stage 1 tunes typically yield +30–40 kW safely, leveraging the robust VGT turbo. With supporting mods (intercooler, exhaust), power can exceed 180 kW. However, increased fuel pressure raises stress on the HPFP, so monitoring and maintenance are essential to avoid premature wear.
In real-world driving, the CHZE achieves approximately 5.9 L/100km (48 mpg UK) in city conditions and 4.7 L/100km (60 mpg UK) on highways. Combined consumption is around 5.2 L/100km (54 mpg UK). Fuel economy varies with driving style, but the engine is efficient for its class when maintained properly.
Yes, the CHZE is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, resulting in severe internal damage. Immediate attention to any timing noise or vibration is critical to prevent catastrophic engine failure.
Audi specifies SAE 5W-30 oil meeting VW 504 00 or 507 00 (multi-vehicle) standards. Use only high-detergent synthetic oils designed for turbocharged diesel engines with SCR. Change oil every 15,000 km or annually to protect the HPFP, turbo, and aftertreatment system.
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.