The Peugeot 5FY (EP6DTS) is a 1,598 cc, inline‑four turbocharged petrol engine produced between 2007 and 2015. It features dual overhead camshafts (DOHC), 16 valves, and gasoline direct injection. This engine delivered 147 kW (200 PS) and 275 Nm of torque, with its twin — scroll turbocharger enabling strong, sustained power delivery for spirited driving.
Fitted primarily to the Peugeot 308 GTI, RCZ, and Citroën DS3 Racing, the 5FY was engineered for high performance and…
Production years 2007–2015 meet Euro 5 standards .
The Peugeot 5FY (EP6DTS) is a 1,598 cc inline‑four turbocharged petrol engine engineered for high-performance compact coupes and hatchbacks (2007-2015). It combines direct fuel injection with a twin-scroll turbocharger to deliver strong, linear power and responsive acceleration. Designed to meet Euro 5 standards, it balances high performance with acceptable emissions for its class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 147 kW (200 PS) @ 5,500 rpm | |
Torque | 275 Nm @ 1,900 rpm | |
Fuel system | Gasoline direct injection (Bosch) | |
Emissions standard | Euro 5 | |
Compression ratio | 9.2:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin-scroll turbo (Mitsubishi Heavy Industries) | |
Timing system | Chain-driven | |
Oil type | PSA B71 2290 (SAE 5W‑40) | |
Dry weight | 120 kg |
The Peugeot 5FY (EP6DTS) was used across PSA Group's high-performance compact platforms with transverse mounting. This engine received minimal platform-specific adaptations and was shared directly between Peugeot and Citroën performance models. 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.
The 5FY (EP6DTS)'s primary reliability risk is timing chain tensioner failure, with elevated incidence in vehicles with extended oil change intervals. PSA internal data indicates a notable number of tensioner replacements before 100,000 km, while turbocharger wastegate issues become a concern after 120,000 km. Neglecting oil changes and using incorrect viscosity make chain component failure highly probable.
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 5FY engine is powerful and generally robust, but its Achilles' heel is the timing chain tensioner, which is sensitive to oil quality and change intervals. With strict adherence to using PSA B71 2290 oil and changing it every 15,000 km, the engine can be very reliable. Neglecting this will almost certainly lead to expensive timing chain repairs. Turbo and fuel pump issues are also common if maintenance is deferred.
The most frequent issues are timing chain tensioner failure, turbocharger wastegate actuator faults, high-pressure fuel pump failure, and carbon buildup on intake valves. These are well-documented in PSA service bulletins and owner reports. The timing chain issue is the most critical, as it can lead to complete engine destruction.
The 5FY (EP6DTS) 1.6L turbo petrol engine was used in the high-performance Peugeot 308 GTI (2010-2015) and RCZ (2009-2015). It was also fitted to the Citroën DS3 Racing (2010-2015). It was not used in standard, non-performance Peugeot models, which used lower-powered variants of the EP6 engine.
Aftermarket ECU tuning is common on the 5FY-EP6DTS 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.
Fuel economy is typical for a high-performance 1.6L turbo engine. Expect around 10.5 L/100km (27 mpg UK) in city driving and 6.5 L/100km (43 mpg UK) on the highway. Combined figures are usually around 8.0-8.5 L/100km (33-35 mpg UK), heavily dependent on driving style. Aggressive driving will significantly increase consumption.
Yes. The 5FY (EP6DTS) is an interference engine. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing catastrophic internal engine damage. This underscores the critical importance of addressing any timing chain rattle immediately.
Peugeot mandates the use of oil meeting the PSA B71 2290 specification, typically a 5W-40 synthetic. Using the correct oil is absolutely critical for the longevity of the timing chain tensioner and turbocharger. ACEA A3/B4 is the minimum acceptable industry standard if the PSA-specific oil is unavailable.
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.