The Peugeot 5FW (EP6) is a 1,598 cc, inline‑four naturally aspirated petrol engine produced between 2006 and 2015. It features a DOHC 16‑valve design with variable valve timing (VVT) on the intake camshaft, delivering a balance of efficiency and responsiveness. In standard applications, it produces 88 kW (120 PS), engineered for accessible performance in compact and mid — size vehicles.
Fitted to models like the Peugeot 207, 308, and Citroën C4, the 5FW was designed for u…
Production years 2006–2009 meet Euro 4 standards; 2010–2015 models meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/7890).
The Peugeot 5FW (EP6) is a 1,598 cc inline‑four naturally aspirated petrol engineered for compact hatchbacks and estates (2006-2015). It combines variable valve timing with multi-point fuel injection to deliver smooth, linear power delivery and good fuel economy. Designed to meet Euro 4 and Euro 5 standards, it balances everyday drivability with low running costs.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 88 kW (120 PS) | |
Torque | 160 Nm @ 4,250 rpm | |
Fuel system | Siemens multi-point injection | |
Emissions standard | Euro 4 (2006–2009); Euro 5 (2010–2015) | |
Compression ratio | 11.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (front‑mounted) | |
Oil type | PSA B71 2290 (SAE 5W‑40) | |
Dry weight | 112 kg |
The Peugeot 5FW (EP6) was used across PSA Group's PF1 and PF2 platforms with transverse mounting. This engine received platform-specific adaptations-revised intake manifolds for the 308 and specific engine mounts for the C4-creating minor interchange considerations. All adaptations are documented in OEM technical bulletins.
The 5FW's primary reliability risk is dephaser pulley failure, with elevated incidence in vehicles using poor-quality oil or extended service intervals. Peugeot service data indicates a notable number of replacements under warranty, while owner reports frequently cite a rattling noise on cold start. Adherence to the correct oil specification and timely replacement of the pulley is critical.
Analysis derived from Peugeot technical bulletins (2009-2013) and UK DVSA failure statistics (2014-2023). 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 5FW is generally a simple and reliable engine for long-term use if maintained correctly. Its main weakness is the dephaser pulley, which can fail prematurely with poor oil or infrequent servicing. The timing chain is durable. Using the correct 5W-40 oil and adhering to service intervals is essential for maximizing longevity and avoiding costly repairs.
The most frequent issues are dephaser pulley failure causing a cold-start rattle, ignition coil pack failures leading to misfires, and coolant leaks from the plastic thermostat housing. Oil leaks from the rocker cover gasket are also common on higher-mileage engines. These are covered in Peugeot service documentation.
The 5FW (EP6) 1.6 VTi 120 engine was used in the Peugeot 207 and 308 from 2006 to 2015. It was also fitted to the equivalent Citroën C4 during the same period. It was not used in smaller PSA vehicles like the 107 or larger models like the 508.
While not a common tuning candidate due to its naturally aspirated design, mild power gains (5-10%) are possible through ECU remapping and intake/exhaust modifications. However, significant power increases are impractical without forced induction. It’s best suited as a reliable daily driver rather than a performance engine.
Real-world fuel economy is very good for a petrol engine. In a Peugeot 207, expect around 6.5 L/100km (43 mpg UK) in combined driving. Highway cruising can yield 5.0-5.5 L/100km (51-56 mpg UK), while city driving may be 8.0-9.0 L/100km (31-35 mpg UK). Results vary with driving style and vehicle condition.
Yes. The 5FW 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 damage. Fortunately, the chain is very reliable if the engine is properly maintained.
Peugeot mandates oil meeting the PSA B71 2290 specification, typically a 5W-40 synthetic. Using the correct oil is vital for protecting the dephaser pulley and ensuring proper lubrication of the timing chain. Always change the oil and filter at the recommended 20,000 km intervals.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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