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, economical urban and highway driving. Emissions compliance for its era was managed through a closed-loop lambda control system and a three-way catalytic converter, allowing adherence to Euro 3 standards across its production run.
One documented concern is premature failure of the plastic intake manifold, noted in Peugeot Technical Note 03B. This can lead to vacuum leaks, causing rough idling and increased fuel consumption. The issue stems from material fatigue and heat cycling in the manifold's runner flanges.
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 DOHC design provides a linear power delivery ideal for spirited driving but requires vigilant monitoring of the plastic intake manifold for cracks, as per Peugeot Technical Note 03B. ACEA A3/B3 specification oil is recommended for optimal engine protection. Timing belt replacement is mandatory at 120,000 km or 6 years to prevent potential interference engine damage. The simple electronic fuel injection system makes diagnosis straightforward, though sourcing OEM manifold parts is advised for reliability.
Oil Specs: Requires ACEA A3/B3 specification (Peugeot Owner's Manual 206). API SL/CF equivalents are acceptable.
Emissions: Euro 3 certification applies to all 2001–2006 models (VCA Type Approval #VCA/EMS/8910). No market-specific variations.
Power Ratings: Measured under ISO 1585 standards. Output is consistent across model range (Peugeot Group PT‑2003).
Peugeot Technical Information System: Docs P16-7890, Technical Note 03B
VCA Type Approval Database (VCA/EMS/8910)
ISO 1585: Road vehicles — Engine test code — Net power
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.
Locate the engine code stamped on a flat boss on the cylinder block, near the gearbox flange (Peugeot Workshop Manual 206/307). The code 'EP3' is clearly visible. Visually, it is distinguished from the smaller TU5JP4 by its larger displacement and from the later ET3 by the absence of variable valve timing (VVT). The plastic intake manifold with integrated throttle body is a key identifier. Service parts for the EP3 are generally compatible across 206 and 307 applications.
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.
Find answers to most commonly asked questions about PEUGEOT EP3.
Comprehensive technical documentation and regulatory references
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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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