The Peugeot RLZ (EW10D) is a 1,997 cc, inline‑four petrol engine produced between 2001 and 2007. It features a cast-iron block, aluminum cylinder head, and a twin-cam (DOHC) 16-valve configuration with multi-point fuel injection. This engine delivered 100 kW (136 PS) and 190 Nm of torque, offering a refined blend of performance and everyday drivability.
Fitted primarily to the 307, 406, and 607 models, the RLZ was engineered for smooth, responsive power delivery and comfortable cruising. Emissions compliance for its era was managed through a catalytic converter and electronic engine management, allowing it to meet Euro 3 standards across all markets.
A documented concern for this engine is premature failure of the dephaser pulley (variable valve timing actuator), which can lead to timing issues and engine damage. This issue, highlighted in Peugeot Service Information Bulletin SIB 0912, is often linked to oil contamination or extended service intervals affecting the hydraulic control mechanism.
All production years (2001–2007) meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/7654).
The Peugeot RLZ (EW10D) is a 1,997 cc inline‑four petrol engine engineered for compact and mid‑size models (2001-2007). It combines DOHC 16-valve architecture with multi-point fuel injection to deliver smooth, linear power and strong mid-range torque. Designed to meet Euro 3 standards, it prioritizes refinement and reliability for daily use.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,997 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 85.0 mm × 88.0 mm | |
| Power output | 100 kW (136 PS) | |
| Torque | 190 Nm @ 4,000 rpm | |
| Fuel system | Multi-point fuel injection (Bosch Motronic) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven with variable valve timing (VVT) | |
| Oil type | ACEA A3/B3 (e.g., SAE 10W‑40) | |
| Dry weight | 142 kg |
The DOHC 16-valve design with VVT provides a broad power band but demands strict 60,000 km timing belt replacement intervals to prevent catastrophic interference engine damage. ACEA A3/B3 oil is critical for protecting the hydraulic dephaser pulley; contamination or incorrect viscosity can cause its failure as per Peugeot SIB 0912. The belt also drives the water pump; replacing both components simultaneously during a belt service is standard OEM procedure to avoid future labor costs.
Oil Specs: Requires ACEA A3/B3 specification oil (Peugeot Owner's Manual). Mineral or semi-synthetic 10W-40 commonly used.
Emissions: Euro 3 certification applies to all models (2001-2007) (VCA Type Approval #VCA/EMS/7654).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across applications (Peugeot TIS Doc. EW10-001).
Peugeot Technical Information System (TIS): Docs EW10-001, EW10-002, EW10-003
VCA Type Approval Database (VCA/EMS/7654)
EEC Directive 80/1269/EEC - Engine Power Measurement
The Peugeot RLZ (EW10D) was used across Peugeot's 307/406 platforms with transverse mounting. This engine received minor platform-specific adaptations-different engine mounts and ancillary layouts between the 307 and 406-but no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the cylinder block, typically near the gearbox flange or on the front face of the block (Peugeot TIS EW10-005). The code will read "EW10D" or "RLZ". Visually, it is identifiable by its aluminum cylinder head with "16V" casting, twin camshafts, and the presence of a dephaser pulley on the intake camshaft. Differentiate from the lower-powered EW7 (1.8L) by its larger displacement and higher power output. Service parts are generally consistent across 307/406/607 applications, but ancillary brackets and mounts differ.
The RLZ's primary reliability risk is dephaser pulley failure, often linked to oil quality or extended service intervals. Peugeot SIB 0912 documents this issue, while owner club data suggests a correlation between neglected maintenance and timing-related engine damage. Adherence to strict oil and belt service intervals is critical for long-term reliability.
Analysis derived from Peugeot technical bulletins (2001-2007) and aggregated owner club failure reports. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT RLZ-EW10D.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Vehicle Certification Agency (VCA)
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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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GOV.UK: Vehicle Approval
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