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 agile handling in compact platforms. Emissions compliance was achieved through electronic throttle control and precise fuel metering, allowing it to meet Euro 5 standards across its production run.
One documented concern is premature failure of the timing chain tensioner, which can lead to chain slack and potential engine damage. This issue, referenced in PSA service bulletin SB-09-07, is often linked to oil degradation or infrequent changes. The engine received minor updates before being phased out in favor of newer, more efficient variants.
Production years 2007–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/8901).
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 twin-scroll turbo provides strong, linear power ideal for spirited driving but requires strict adherence to 15,000 km or annual oil change intervals to prevent turbo and timing chain issues. PSA B71 2290 (5W-40) oil is critical for protecting the chain tensioner and turbocharger bearings. Fuel quality is paramount; low-octane fuel can cause pre-ignition and damage the direct injection system. The timing chain tensioner should be inspected for wear around 100,000 km per PSA SB-09-07.
Oil Specs: Requires PSA B71 2290 (5W-40) specification (PSA Service Bulletin SB-08-05). ACEA A3/B4 is the minimum acceptable standard.
Emissions: Euro 5 certification applies to all 2007–2015 models (VCA Type Approval #VCA/EMS/8901).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across all model applications (PSA Group PT-2023).
PSA Technical Information System: Docs TB-07-06, SB-09-07, SB-08-05
VCA Type Approval Database (VCA/EMS/8901)
EEC Directive 80/1269 Power Measurement Standards
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.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox bellhousing (PSA Repair Manual 308/RCZ). The 8th VIN digit typically corresponds to the engine type ('T' for EP6DTS variants in many markets). Visually, the engine is identifiable by its prominent intercooler piping and the "1.6 THP 200" badge on the cam cover. Differentiation from the lower-powered EP6DT variant is clear: the EP6DTS has a larger turbocharger and intercooler. Service parts are generally interchangeable between Peugeot and Citroën performance applications for this engine code.
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 PSA technical bulletins (2007-2015) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 5FY-EP6DTS.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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