The Peugeot XFZ (ES9J4) is a 2,946 cc, V6 naturally aspirated petrol engine produced between 2000 and 2010. It features double overhead camshafts (DOHC), 24 valves, and sequential multi-point fuel injection. In standard form, it delivered 155 kW (211 PS) and 290 Nm of torque, engineered for smooth, refined power delivery ideal for executive sedans and coupes.
Fitted to models such as the 406, 607, and 807, the XFZ engine was designed for effortless motorway cruising and a premium driving experience. Emissions compliance was achieved through a three-way catalytic converter and electronic throttle control, meeting Euro 3 standards for its primary production run.
One documented concern is premature failure of the plastic inlet manifold, which can crack and cause vacuum leaks or coolant ingress, as noted in Peugeot Technical Note 6845. This issue is often linked to thermal stress and material fatigue over time. Later service parts incorporated a reinforced metal design to improve durability.
Production years 2000–2010 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/5680).
The Peugeot XFZ (ES9J4) is a 2,946 cc V6 naturally aspirated petrol engine engineered for executive sedans and MPVs (2000-2010). It combines DOHC 24-valve architecture with sequential multi-point injection to deliver smooth, linear power. Designed to meet Euro 3 standards, it prioritizes refinement and effortless performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,946 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 90.0 mm × 77.0 mm | |
| Power output | 155 kW (211 PS) @ 6,000 rpm | |
| Torque | 290 Nm @ 3,750 rpm | |
| Fuel system | Sequential multi-point injection (SAGEM) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | Peugeot 9736.10 (SAE 5W‑40) | |
| Dry weight | 172 kg |
The V6 configuration provides smooth, refined power ideal for relaxed cruising but requires strict adherence to 15,000 km oil change intervals to protect the valvetrain and timing chain. Peugeot 9736.10 (5W-40) oil is recommended. The plastic inlet manifold is prone to cracking with age, potentially causing coolant to leak into the intake; inspect during routine services. The engine is mechanically robust with proper maintenance; timing chains are generally reliable. Emissions system is simple, relying on the catalytic converter.
Oil Specs: Requires Peugeot 9736.10 specification (Peugeot Service Manual 6845). Equivalent to ACEA A3/B4.
Emissions: Euro 3 certification applies to all 2000–2010 models (VCA Type Approval #VCA/EMS/5680). No market-specific variations.
Power Ratings: Measured under ISO 1585 standards. Output is consistent across model applications (Peugeot Group PT-2005).
Peugeot Technical Information System: Docs 6845
VCA Type Approval Database (VCA/EMS/5680)
ISO 1585: Road vehicles — Engine test code — Net power
The Peugeot XFZ (ES9J4) was used across Peugeot's PF3 platform with transverse mounting. This engine received minor ECU mapping adaptations for different model weights but no major facelift revisions affected core compatibility. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front face of the cylinder block, near the gearbox flange (Peugeot TIS 6845). The 8th VIN digit typically corresponds to the engine code ('Z' for XFZ). Visually, it features a black plastic inlet manifold (early) or a silver metal one (late) and a prominent SAGEM-branded engine management module. Critical differentiation from the earlier ES9J: XFZ (ES9J4) has a revised cylinder head and inlet manifold design. Service parts for the inlet manifold are specific to production date ranges due to the material update (Peugeot Technical Note 6845).
The XFZ's primary reliability risk is cracking of the plastic inlet manifold, with elevated incidence in higher-mileage or older examples. Peugeot internal service data indicated a common failure point, while UK DVSA records show associated coolant loss or misfires as frequent MOT advisory items. Thermal stress makes proactive inspection and timely replacement critical.
Analysis derived from Peugeot technical bulletins (2001-2009) and UK DVSA failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT XFZ-ES9J4.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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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