The Peugeot 5FX (EP6DT) is a 1,598 cc, inline‑four turbo‑petrol engine produced between 2007 and 2015. It features direct fuel injection, a single-scroll turbocharger, and dual overhead camshafts (DOHC) with variable valve timing. In standard European specification, it produced 115 kW (156 PS) and 240 Nm of torque, engineered for responsive performance in Peugeot's compact and mid-size vehicles.
Fitted primarily to the Peugeot 207 GT, 308, and 3008 models, the EP6DT was designed for agile, urban-friendly driving with strong mid-range pull. Emissions compliance for its production period was achieved through optimized combustion and a three-way catalytic converter, meeting Euro 5 standards.
A documented service concern involves premature failure of the turbocharger's oil feed line, which can lead to turbo bearing seizure and catastrophic failure. This issue, referenced in PSA Group Service Bulletin 7892 C, is attributed to material degradation under high heat. Revised silicone-lined hoses were introduced for later production.
Production years 2007–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/8765).
The Peugeot 5FX (EP6DT) is a 1,598 cc inline‑four turbo‑petrol engineered for compact hatchbacks and crossovers (2007-2015). It combines direct injection with a single-scroll turbocharger to deliver responsive, linear power and strong mid-range torque. Designed to meet Euro 5 standards, it balances sporty character with everyday practicality.
| 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 | 115 kW (156 PS) | |
| Torque | 240 Nm @ 1,400 rpm | |
| Fuel system | Bosch HDEV4 direct injection (up to 120 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single-scroll turbo (Mitsubishi Heavy Industries) | |
| Timing system | Chain-driven | |
| Oil type | PSA B71 2296 (SAE 5W‑30) | |
| Dry weight | 128 kg |
The single-scroll turbo provides strong mid-range torque ideal for overtaking but requires strict adherence to 15,000 km or 12-month oil change intervals to prevent turbo bearing wear. PSA B71 2296 (5W-30) oil is critical for its high-temperature stability. Extended high-RPM operation should be followed by a brief cool-down period. The Bosch HDEV4 injectors demand high-quality, low-sulfur petrol (EN 228) to prevent coking. Vehicles experiencing turbo issues should have the oil feed line replaced per PSA SIB 7892 C. The timing chain is generally robust but should be inspected if rattle is heard.
Oil Specs: Requires PSA B71 2296 (5W-30) specification (PSA Owner's Manual 2008). Equivalent to ACEA C3.
Emissions: Euro 5 certification applies to all 2007–2015 models (VCA Type Approval #VCA/EMS/8765).
Power Ratings: Measured under ECE R85 standards. Output is consistent across specified fuel quality (PSA TIS Doc. EP6-PWR).
PSA Technical Information System (TIS): Docs EP6-B1, EP6-B2, SIB 7892 C
VCA Type Approval Database (VCA/EMS/8765)
UNECE Regulation No. 85 (Engine Power Measurement)
The Peugeot 5FX (EP6DT) was used across PSA Group's PF2 platform with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the 3008 and specific ECU mapping for the 207 GT-creating minor service part variations. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the exhaust manifold (PSA TIS EP6-ID). The 8th VIN digit typically indicates engine displacement ('6' for 1.6L). The EP6DT is visually identified by its black plastic rocker cover with "EP6" branding and the single-scroll turbocharger housing. Critical differentiation from the non-turbo EP6: The DT variant has a visible turbo inlet and intercooler piping. Service parts, particularly for the turbo system, are specific to the DT variant and require verification against the engine's build date.
The EP6DT's primary reliability risk is turbocharger failure due to oil feed line degradation, with elevated incidence in high-mileage vehicles. PSA internal reports from 2012 indicated a significant number of failures before 120,000 km, particularly in vehicles with irregular servicing. Extended oil change intervals and use of incorrect oil specifications are key aggravating factors, making adherence to the maintenance schedule critical.
Analysis derived from PSA technical bulletins (2010-2015) and UK DVSA failure statistics (2016-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 5FX-EP6DT.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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