The Peugeot RFJ (EW10A) is a 1,997 cc, inline‑four naturally aspirated petrol engine produced between 2001 and 2008. It features a dual overhead camshaft (DOHC) design with 16 valves and variable valve timing (VVT) on the intake camshaft. This configuration, known as the EW10 engine family, delivers a balance of power and efficiency, with outputs typically around 100–110 kW (136–150 PS).
Fitted to models such as the 307, 407, and Partner Tepee, the RFJ engine was engineer…
Production years 2001–2005 generally meet Euro 3 standards; 2006–2008 models typically comply with Euro 4 .
The Peugeot RFJ (EW10A) is a 1,997 cc inline‑four naturally aspirated petrol engine engineered for compact and mid‑size models (2001-2008). It combines DOHC 16-valve architecture with variable valve timing to deliver responsive performance and smooth power delivery. Designed to meet Euro 3 and Euro 4 emissions standards, it balances everyday drivability with reasonable fuel economy.
| 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 | 100–110 kW (136–150 PS) | |
Torque | 190–200 Nm @ 4,000 rpm | |
Fuel system | Multipoint Electronic Fuel Injection | |
Emissions standard | Euro 3 (pre-2006); Euro 4 (2006 onwards) | |
Compression ratio | 10.4:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven with variable intake cam (dephaser) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 135 kg |
The Peugeot RFJ (EW10A) was used across Peugeot's PF2/PF3 platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the 407 saloon and specific intake manifolds for the Partner Tepee-with no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
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The RFJ (EW10A)'s primary reliability risk is dephaser pulley failure, with elevated incidence in vehicles subjected to short trips or irregular oil changes. PSA internal data indicated a significant number of pulley replacements under warranty, while owner reports frequently cite the characteristic cold-start rattle. Infrequent oil changes and the use of incorrect oil viscosity make timely pulley replacement critical.
Analysis derived from PSA technical bulletins (2005-2010) and owner-reported failure data (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
The RFJ engine is generally robust mechanically, but its Achilles' heel is the dephaser pulley. With proactive replacement of the pulley and strict adherence to the 120,000 km timing belt interval, it can be very reliable. Regular oil changes with the correct specification are paramount for longevity.
The most frequent issues are dephaser pulley rattle/failure, timing belt failure if neglected, broken swirl flaps in the inlet manifold, and oil leaks from the rocker cover gasket. These are well-documented in PSA service bulletins and owner communities.
This 2.0L petrol engine was primarily used in the Peugeot 307 (2001-2008), 407 (2004-2008), and Partner Tepee (2008-2010). It was also fitted to the Citroën C5 (2001-2007) and C8 minivan as part of the PSA Group's shared engine strategy.
Yes, but gains are modest. An ECU remap can yield an extra 10-15 kW and 20-30 Nm by optimizing ignition and fuel maps. More significant power requires forced induction (turbo/supercharger), which is complex and costly. Bolt-on modifications like an exhaust offer minimal gains.
Real-world fuel economy varies. In a Peugeot 307, expect around 9.0 L/100km in the city and 6.0 L/100km on the highway, averaging 7.5 L/100km (approx. 38 mpg UK) combined. The heavier 407 will be slightly thirstier, averaging closer to 8.5 L/100km (33 mpg UK).
Yes. The RFJ (EW10A) is an interference engine. If the timing belt breaks or jumps teeth, the pistons will collide with the open valves, causing severe and expensive internal engine damage. Adhering to the timing belt replacement schedule is non-negotiable.
Peugeot specifies oil meeting the PSA B71 2290 standard, typically a 5W-40 or 10W-40 full synthetic. Using the correct oil is crucial for protecting the dephaser pulley and ensuring proper lubrication. Change intervals should not exceed 15,000 km or one year.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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