The Audi CJTB 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, designed for improved thermal efficiency, reduced emissions, and enhanced performance over prior iterations. Featuring direct fuel injection (FSI), variable valve timing, and dual overhead camshafts (DOHC), it delivers 140 kW (190 PS) and 320 Nm of torque, with 48V mild — hybrid (MHEV) integration introdu…
All production years (2016–2021) comply with Euro 6c/6d-TEMP standards .
The Audi CJTB is a 1,984 cc inline-four turbocharged petrol engine engineered for mid-size and compact SUV platforms (2016–2021). It combines direct fuel injection with a single turbocharger and 48V mild-hybrid integration from 2018 onward to deliver responsive mid-range performance and improved efficiency. Designed to meet Euro 6c and Euro 6d-TEMP standards, it balances real-world emissions compliance with driving dynamics.
| 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) @ 4,200–6,000 rpm | |
Torque | 320 Nm @ 1,500–4,200 rpm | |
Fuel system | Bosch HDEV5 high-pressure direct injection (up to 200 bar) | |
Emissions standard | Euro 6c (2016–2018); Euro 6d-TEMP (2018–2021) | |
Compression ratio | 9.6:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single turbo (IHI VF37 variable-vane) | |
Timing system | Roller chain (non-interference design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 142 kg |
The Audi CJTB was used across Audi's B9/F5/FY platforms with longitudinal mounting in quattro variants and transverse in front-wheel-drive models. This engine features 48V mild-hybrid integration from 2018 onward and GPF systems standard on all units, ensuring Euro 6c and later Euro 6d-TEMP compliance. Platform-specific calibrations and hybrid integration create 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 CJTB is generally robust, especially compared to earlier EA888 engines. The main concern is HPFP wear in vehicles with extended oil intervals. When maintained with correct oil (VW 502 00/505 00) and regular service, the engine is reliable beyond 200,000 km. Timing chains are durable, but tensioners may wear beyond 200,000 km. The 48V MHEV system adds complexity but is generally reliable when maintained. Using correct oil and driving regularly on highways greatly enhances longevity.
Primary issues include high-pressure fuel pump wear, GPF clogging, and turbocharger wastegate actuator sticking. Secondary concerns are timing chain tensioner rattle and occasional carbon buildup on intake valves. These are documented in Audi service bulletins, particularly SIB 2017-03-01 for HPFP improvements and SIB 2016-03-01 for oil specification enforcement.
The CJTB 2.0 TFSI 190 PS was used in the Audi A4 (B9, 2016–2021), A5 (F5, 2016–2021), Q5 (FY, 2017–2021), A6 (C8, 2019–2021), and Q7 (4M, 2020–2021). It was available in both front-wheel-drive and quattro configurations. All models feature GPF systems and 48V mild-hybrid integration from 2018 onward, meeting Euro 6c and Euro 6d-TEMP emissions standards.
Aftermarket ECU tuning is common on the CJTB 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 2.0 TFSI (190 PS), combined consumption is ~6.5 L/100km (43 mpg UK). Highway runs can achieve ~5.8 L/100km (49 mpg UK), while city driving may reach ~8.0 L/100km (35 mpg UK). Real-world figures for mixed driving typically range from 35–45 mpg UK, depending on driving style and condition. The 48V MHEV system contributes to efficiency via coasting and regenerative braking.
No. The CJTB uses a non-interference valvetrain design. If the timing chain fails, piston-to-valve contact is unlikely, reducing the risk of catastrophic engine damage. However, any timing issue still requires immediate repair to prevent valve or piston damage from secondary contact or loss of compression.
Audi specifies VW 502 00 / 505 00 (SAE 5W-30) synthetic oil. This low-ash formulation is essential for protecting the turbocharger, high-pressure fuel pump, and GPF. Change intervals are 15,000 km or annually under normal conditions, but shorten to 10,000 km for frequent short trips or towing.
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.