The Audi AUK is a 1,984 cc, inline — four petrol engine produced between 2015 and 2021. It belongs to the Volkswagen Group's EA888 engine family, featuring turbocharged direct injection (TSI), double overhead camshafts (DOHC), and variable valve timing. In standard tune, it produces 140 kW (190 PS) at 3,800–6,000 rpm and 320 Nm of torque between 1,500–3,750 rpm, delivering strong low — end response and highway refinement.
Fitted primarily to the Audi A4 (B9), A5 (F5), and A…
Production years 2015–2016 meet Euro 5 standards; 2017–2021 models comply with Euro 6 depending on market .
The Audi AUK is a 1,984 cc inline-four petrol engine engineered for mid-size applications (2015–2021). It combines turbocharged stratified injection (TSI) with variable valve timing to deliver responsive low-end torque and efficient cruising. Designed to meet Euro 6 standards, it balances performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
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 | Gasoline direct injection (TSI) | |
Emissions standard | Euro 5 (pre-2017); Euro 6 (2017–2021) | |
Compression ratio | 9.6:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single-scroll turbocharger with intercooler | |
Timing system | Chain-driven (front-mounted; tensioner wear concern) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 128 kg |
The Audi AUK was used across Audi's B9/F5/C7 platforms with longitudinal mounting and shared architecture within the Volkswagen Group MLB family. This engine received platform-specific adaptations-revised cooling routing in the A6 and dual-mass flywheel tuning in the A5-and from 2017 the facelifted A4 Avant adopted the AUK with updated emissions calibration, 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 AUK delivers strong performance and good efficiency, but early models (2015–2016) had reliability concerns, particularly timing chain tensioner wear. Later revisions (post-2017) improved durability with updated components, so well-maintained examples can be robust. Regular servicing and using high-quality oil (5W-30 VW 502 00) greatly enhance longevity.
The most documented issues are timing chain tensioner wear (leading to rattling or failure), intake valve carbon buildup, lambda sensor degradation, and valve cover oil leaks. These are confirmed in Audi service bulletins and field reports. Carbon cleaning and timely tensioner updates are key preventative measures.
The AUK 2.0 TFSI (190 PS) was used in the Audi A4 (B9, 2015–2021), A5 (F5, 2016–2021), and A6 (C7, 2016–2018). It was part of the EA888 engine family shared across the Volkswagen Group and was not licensed to non-VAG brands. Applications were limited to front-wheel-drive and quattro models with longitudinal mounting.
Aftermarket ECU tuning is common on the AUK 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 for its power class. In an A4 2.0 TFSI (2016), typical consumption is ~8.5 L/100km (city) and ~5.8 L/100km (highway), or about 45 mpg UK combined. Real-world figures vary with driving style, but expect 40–50 mpg (UK) on mixed roads for a healthy AUK engine.
Yes. The AUK is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, resulting in severe internal damage. This makes timely maintenance and immediate attention to timing rattles essential to avoid costly repairs.
Audi specifies a 5W-30 synthetic oil meeting VW 502 00 (petrol) or 505 00 (multi-vehicle) standards. Use of correct specification oil is critical for timing chain lubrication and longevity. Change intervals should not exceed 15,000 km or one year, whichever comes first, to prevent premature wear.
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.