The Audi DAXC is a 1,984 cc, inline — four turbocharged petrol engine produced between 2016 and 2021. It belongs to the Volkswagen Group's EA888 Gen 3B engine family, engineered for responsive performance and thermal efficiency. Featuring direct fuel injection (FSI), turbocharging, and variable valve timing (AVS), it delivers 140 kW (190 PS) and 320 Nm of torque, with strong mid — range pull ideal for daily driving and highway overtaking.
Fitted to models such as the A3 (8V…
Production years 2016–2018 meet Euro 6b standards; 2019–2021 models comply with Euro 6d-TEMP depending on market .
The Audi DAXC is a 1,984 cc inline-four turbocharged petrol engine engineered for compact and mid-size models (2016–2021). It combines direct fuel injection with a single-scroll turbocharger to deliver strong mid-range torque and responsive acceleration. Designed to meet Euro 6b and Euro 6d-TEMP emissions standards, it balances sporty performance with environmental compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (single-scroll) | |
Bore × stroke | 82.5 mm × 92.8 mm | |
Power output | 140 kW (190 PS) @ 3,800–6,000 rpm | |
Torque | 320 Nm @ 1,500–3,750 rpm | |
Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
Emissions standard | Euro 6b (2016–2018); Euro 6d-TEMP (2019–2021) | |
Compression ratio | 9.6:1 | |
Cooling system | Dual-circuit with integrated exhaust manifold | |
Turbocharger | Single-scroll turbo (BorgWarner KP35) | |
Timing system | Double-row chain (front-mounted; tensioner wear-prone) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 142 kg |
The Audi DAXC was used across Audi's 8V/B9/F5 platforms with transverse mounting in front-wheel-drive models and longitudinal in quattro variants. This engine received platform-specific adaptations-shorter intake manifolds in the A3 and revised cooling layouts in the Q3-and from 2019 the facelifted A4 B9.5 adopted the updated EA888 evo4 variant with enhanced thermal management, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
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 DAXC delivers strong performance and responsiveness, but early models (2016–2017) had reliability concerns, particularly timing chain tensioner wear. Later revisions (post-2018) improved durability with updated components. Well-maintained engines with regular oil changes using Audi Longlife-15 (5W-30) can exceed 200,000 km. Adherence to service intervals is critical for long-term reliability.
The most documented issues are timing chain tensioner wear, turbocharger oil coking, intake carbon buildup, and oil leaks from valve/timing covers. These are confirmed in Audi service bulletins and field reports. Regular maintenance significantly reduces the risk of major failures.
The DAXC engine was used in the A3 (8V), A4 (B9), A5 (F5), and Q3 (8U) models from 2016 to 2021. It was available in 35 TFSI and 40 TFSI trims, primarily in European markets. Euro 6b models were produced until 2018, with Euro 6d-TEMP variants from 2019 onward.
Aftermarket ECU tuning is common on the DAXC 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.
Good. In an A4 40 TFSI (B9), real-world consumption averages ~7.8 L/100km (city) and ~5.6 L/100km (highway), or ~45 mpg UK combined. A3 and Q3 variants show similar efficiency. Expect 40–48 mpg UK on mixed driving with proper maintenance.
Yes. The DAXC is an interference engine. If the timing chain fails or jumps, pistons can strike open valves, resulting in severe internal damage. Immediate attention to any chain rattle or warning lights is essential to prevent catastrophic engine failure.
Audi specifies SAE 5W-30 oil meeting Longlife-15 standards. Use only VW 502 00 or Audi-approved synthetic oil and change every 15,000 km or annually. Proper oil ensures chain lubrication and protects the high-pressure fuel system.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
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.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.