The Peugeot EP3 is a 1,587 cc, inline‑four naturally aspirated petrol engine produced between 2001 and 2006. It features a dual overhead camshaft (DOHC) 16‑valve design with multipoint fuel injection, delivering 80 kW (109 PS) and 147 Nm of torque. Its aluminum alloy block and head prioritized weight reduction for improved fuel economy and agile handling in compact applications.
Fitted primarily to the 206 and 307 hatchbacks, the EP3 was engineered for responsive, econ…
Production years 2001–2006 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/8910).
The Peugeot EP3 is a 1,587 cc inline‑four naturally aspirated petrol engineered for compact hatchbacks (2001-2006). It combines DOHC 16-valve architecture with multipoint fuel injection to deliver responsive performance and efficient cruising. Designed to meet Euro 3 standards, it balances everyday agility with low running costs.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,587 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 78.5 mm × 82.0 mm | |
Power output | 80 kW (109 PS) @ 5,800 rpm | |
Torque | 147 Nm @ 4,000 rpm | |
Fuel system | Multipoint fuel injection (Siemens Sagem) | |
Emissions standard | Euro 3 | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven | |
Oil type | ACEA A3/B3 (SAE 10W‑40) | |
Dry weight | 112 kg |
The Peugeot EP3 was used across Peugeot's 20x/30x platform with transverse mounting. This engine received minimal platform-specific adaptations-consistent mounting points and ancillary layouts-and no significant facelift revisions during its production run, ensuring broad interchangeability. All adaptations are documented in OEM technical bulletins.
The EP3's primary reliability risk is plastic intake manifold cracking, with elevated incidence in high-mileage or hot-climate examples. Peugeot Technical Note 03B documents this as a common service item, while owner surveys indicate it as a frequent cause of drivability complaints. Extended high-RPM operation increases thermal stress, making preventative manifold inspection critical.
Analysis derived from Peugeot technical bulletins (2001-2006) and owner club failure statistics (2010-2023). 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
Generally, yes. The EP3 is a robust and simple engine. With proper maintenance, particularly timely timing belt changes and addressing the common intake manifold issue, these engines can easily surpass 250,000 km. Its lack of forced induction or complex variable valve timing contributes to its durability.
The most frequent issues are cracking of the plastic intake manifold, failure of individual ignition coil packs causing misfires, faulty coolant temperature sensors leading to poor running, and oil leaks from the camshaft cover gasket. These are well-documented in Peugeot service notes.
The EP3 engine was primarily fitted to the Peugeot 206 hatchback (2001-2006, including early GTi models) and the Peugeot 307 hatchback (2001-2005, SE and Sport trims). It was part of PSA's EW/DW engine family, sharing architecture with contemporary Citroën units.
Yes, modest gains are possible. Common modifications include installing a performance air filter, a free-flow exhaust system, and having the ECU remapped. These can yield 10-15% more power. More significant power increases require internal modifications like higher compression pistons or camshafts, which is less common for this engine.
Very good for a naturally aspirated petrol engine of its era. Expect real-world figures of approximately 7.0 L/100km (40 mpg UK) in mixed driving for a 206. Highway cruising can see consumption drop to around 5.5 L/100km (51 mpg UK). The 307 will be slightly less efficient due to its larger size and weight.
Yes. The EP3 is an interference engine. If the timing belt snaps or jumps teeth, the pistons will collide with the open valves, causing severe and expensive internal engine damage. Strict adherence to the 120,000 km / 6-year replacement interval is essential.
Peugeot specifies an oil meeting ACEA A3/B3 standards, typically a 10W-40 or 5W-40 semi-synthetic or synthetic blend. Using a quality petrol engine oil is crucial for protecting the internals and maintaining performance. Avoid using oils designed only for diesel engines.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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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
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