The Peugeot 6FY (EW7A) is a 1,749 cc, inline‑four naturally aspirated petrol engine produced between 2001 and 2006. It features an aluminum block and head, dual overhead camshafts, and a single — point fuel injection system for simplicity and cost — effectiveness. In standard form, it delivered 70 kW (95 PS) and 145 Nm of torque, engineered for reliable, economical performance in entry — level compact models.
Fitted primarily to the Peugeot 206 and Citroën C3, the 6FY was de…
Production years 2001–2006 meet Euro 3 standards exclusively .
The Peugeot 6FY (EW7A) is a 1,749 cc inline‑four naturally aspirated petrol engineered for economy-focused hatchbacks (2001-2006). It combines a simple single-point injection system with a lightweight aluminum construction to deliver predictable performance and low maintenance. Designed to meet Euro 3 standards, it prioritizes reliability and cost-efficiency for high-mileage urban use.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,749 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 78.5 mm × 90.0 mm | |
Power output | 70 kW (95 PS) | |
Torque | 145 Nm @ 4,000 rpm | |
Fuel system | Single-point injection (Magneti Marelli IAW 8P) | |
Emissions standard | Euro 3 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven | |
Oil type | PSA B71 2290 (SAE 10W‑40) | |
Dry weight | 110 kg |
The Peugeot 6FY (EW7A) was used across PSA Group's economy platforms with transverse mounting. This engine received platform-specific adaptations-shared ECU mapping with the Citroën C3 and unique engine mounts for the Peugeot 206-with no significant revisions during its production run. All adaptations are documented in OEM technical bulletins.
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The 6FY (EW7A)'s primary reliability risk is intake manifold failure, with elevated incidence in high-mileage vehicles. PSA internal reports noted a significant number of manifold cracking cases under warranty, while owner feedback frequently cites age and heat cycling as contributing factors. Neglected maintenance and use of incorrect coolant make adherence to OEM service schedules critical.
Analysis derived from PSA technical bulletins (2002-2007) and owner-reported failure data (2005-2023). 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 6FY is a simple and generally robust engine, known for its durability when properly maintained. Its main weaknesses are the plastic intake manifold and the critical timing belt. With timely replacement of the timing belt and addressing any manifold issues, it can easily reach 200,000 km or more. Regular oil changes are essential for longevity.
The most frequent issues are cracking of the plastic intake manifold, timing belt failure if neglected, ignition coil failures, and coolant leaks from aging plastic components. These are well-documented in PSA service bulletins and owner forums, with the intake manifold and timing belt being the most critical concerns.
This engine was primarily used in the Peugeot 206 (2001-2006) and its platform sibling, the Citroën C3 (2002-2006), both badged as 1.6i. It was designed as an economical workhorse for these popular compact cars.
While not a performance engine, minor gains are possible. A remap can yield a few extra PS, but the single-point injection system limits potential. More effective modifications include a performance air filter and exhaust, though gains will be modest. Significant power increases are not practical or cost-effective on this engine.
Expect combined fuel economy of around 38-42 mpg (UK) or 6.5-6.0 L/100km in a Peugeot 206. Real-world figures are very good for city driving, often exceeding 45 mpg, while highway cruising can yield up to 50 mpg. It's an exceptionally economical engine for its era.
Yes. The 6FY is an interference engine. If the timing belt breaks or skips, the pistons will collide with the open valves, causing severe and expensive internal engine damage. This makes adhering to the 80,000 km or 5-year timing belt replacement interval absolutely critical.
Peugeot specifies oil meeting the PSA B71 2290 standard, typically a 10W-40 semi-synthetic or mineral oil. Using the correct specification is important for engine protection, especially given the age of these engines. High-quality oil helps prolong the life of the timing belt and other components.
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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