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…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The EP6DT is a lively and responsive engine, but its long-term reliability is closely tied to addressing the known turbo oil feed line issue. Vehicles that have had the feed line replaced per PSA bulletin 7892 C, and which receive strict, timely oil changes with the correct specification, can be very reliable beyond 150,000 km.
The most critical issue is turbocharger failure due to oil feed line degradation. Other common problems include high-pressure fuel pump failure, intake manifold runner control faults, and timing chain tensioner rattle. These are well-documented in PSA service bulletins and owner reports.
This 1.6L THP engine was primarily used in the Peugeot 207 GT (2007-2013), 308 (2007-2013), and 3008 (2009-2015) models. It was always offered in the 150-156 PS power output variant, providing a sporty character to these vehicles.
Yes, the EP6DT responds well to ECU remapping. Stage 1 tunes can safely increase power to around 180-200 PS and torque to 280+ Nm. The engine's internals are generally robust, but tuning increases stress on the turbo and fuel system, so ensuring those components are in perfect condition is crucial before proceeding.
Fuel economy is reasonable for a turbocharged petrol engine. In a Peugeot 308, expect around 7.8 L/100km (36 mpg UK) in combined driving. Highway cruising can yield figures closer to 6.2 L/100km (46 mpg UK). Real-world economy is heavily influenced by driving style.
Yes. Like virtually all modern engines, the EP6DT is an interference design. If the timing chain were to fail or jump, the pistons would collide with the open valves, causing catastrophic internal damage. Fortunately, the timing chain is very durable on this engine.
Peugeot mandates the use of oil meeting the PSA B71 2296 specification, typically a 5W-30 synthetic. Using the correct oil is critical for protecting the turbocharger and high-pressure fuel pump. Change intervals should not exceed 15,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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