The Citroën 5FT (engine code EP6DT) is a 1,598 cc, inline — four turbocharged petrol engine developed by PSA Group in partnership with BMW, produced between 2010 and 2018. It features direct fuel injection, variable valve timing (VVT), and twin — scroll turbocharging. In standard tune, it delivers 147 kW (200 PS), with peak torque of 275 Nm available from 1,900 rpm, providing strong mid — range performance.
Fitted to models including the Citroën C4 Picasso, DS4, and DS5, the…
Production years 2010–2015 meet Euro 5 standards; 2016–2018 models comply with Euro 6b depending on market .
The Citroën EP6DT is a 1,598 cc inline-four turbocharged petrol engine engineered for compact and premium hatchbacks (2010–2018). It combines direct injection with a twin-scroll turbocharger to deliver responsive mid-range acceleration and improved fuel efficiency. Designed to meet Euro 5 and later Euro 6b standards, it balances sporty performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (twin-scroll) | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 147 kW (200 PS) @ 5,500 rpm | |
Torque | 275 Nm @ 1,900–4,500 rpm | |
Fuel system | Direct injection (Bosch HDEV5, up to 200 bar) | |
Emissions standard | Euro 5 (2010–2015); Euro 6b (2016–2018) | |
Compression ratio | 9.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Mitsubishi TD04HL-15T twin-scroll | |
Timing system | Timing chain (DOHC, front-mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 122 kg |
The Citroën 5FT (EP6DT) was used across Citroën's C4/DS platforms with transverse mounting and shared with Peugeot and Mini under joint engineering agreements. This engine received platform-specific calibrations-tuned throttle response in the DS5 and revised cooling in the C4 Picasso-and from 2016, Euro 6b-compliant variants featured updated ECU mapping and particulate filter integration, 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 EP6DT delivers strong performance and responsiveness, but pre-2015 models have known turbocharger and fuel pump reliability concerns. Later Euro 6b variants (2016+) benefit from improved cooling and emissions controls, enhancing durability. Regular maintenance with PSA B71 2290 oil and RON 98 fuel significantly improves long-term reliability.
The most documented issues are turbocharger bearing wear, high-pressure fuel pump failure due to low-octane fuel, and intake valve carbon buildup from direct injection. Additional concerns include cold-start timing chain rattle and lambda sensor degradation. These are covered in PSA service bulletins and field reports.
This 1.6L turbo petrol engine was used in the Citroën DS4 (2011–2015), DS5 (2011–2018), and C4 Picasso (2013–2018). It was also shared with Peugeot (308 GT) and Mini (Cooper S F56) under the PSA-BMW joint engine program. Euro 5 and Euro 6b variants have different emissions hardware.
Aftermarket ECU tuning is common on the 5FT-EP6DT 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 combined driving, the EP6DT averages 7.5–8.5 L/100 km (33–37 mpg UK). Real-world consumption varies significantly with driving style—aggressive use may exceed 10 L/100 km, while steady motorway cruising can achieve ~6.5 L/100 km. Turbocharging improves efficiency under load.
Yes. The EP6DT is an interference engine, meaning a timing failure can result in piston-to-valve contact and severe internal damage. While the chain is generally durable, any persistent cold-start rattle should be investigated promptly to prevent costly repairs.
PSA specifies Total Quartz INEO ECS 5W-30 (PSA B71 2290) or equivalent. Oil must be changed every 15,000 km or annually to protect the turbocharger and high-pressure fuel system. Using non-compliant oil increases the risk of premature turbo and pump failure.
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.