The Peugeot N9TE is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2004 and 2010. It features a DOHC 16‑valve design with common‑rail direct injection and a variable geometry turbocharger (VGT), delivering a blend of performance and efficiency. In standard form it produced 100 kW (136 PS) and 320 Nm of torque, with its VGT enabling strong low‑end response for flexible driving.
Fitted to models such as the 307, 407, and Partner Tepee, the N9TE was engineered for drivers seeking a balance of fuel economy, mid-range torque, and motorway refinement. Emissions compliance was achieved through exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), meeting Euro 4 standards from its introduction.
One documented reliability concern is premature failure of the high-pressure fuel pump, which can lead to drivability issues and engine management faults. This issue, referenced in Peugeot Service Bulletin 06DZ04B, is often linked to fuel contamination or extended service intervals. In 2007, minor ECU mapping revisions were implemented to optimize fuel delivery and pump longevity.
Production years 2004–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/4567).
The Peugeot N9TE is a 1,997 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2004-2010). It combines common‑rail direct injection with a variable geometry turbocharger to deliver strong low‑rpm torque and efficient cruising. Designed to meet Euro 4 standards, it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,997 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 85.0 mm × 88.0 mm | |
| Power output | 100 kW (136 PS) @ 4,000 rpm | |
| Torque | 320 Nm @ 2,000 rpm | |
| Fuel system | Common-rail direct injection (Bosch CP3) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable geometry turbo (VGT) | |
| Timing system | Chain‑driven | |
| Oil type | Peugeot 9.55535‑S2 (SAE 5W‑30) | |
| Dry weight | 160 kg |
The VGT turbo provides immediate throttle response ideal for mixed driving but requires premium low-sulfur diesel (EN 590) to prevent injector and pump failure. Peugeot 9.55535-S2 (5W-30) oil is critical for maintaining chain and turbo health. Extended oil change intervals can accelerate high-pressure fuel pump wear, as noted in SIB 06DZ04B. The DPF mandates the use of low-ash oil to prevent clogging; regeneration cycles are automatic but can be hindered by persistent short trips. Pre-2007 models may benefit from the ECU update to optimize fuel pump duty cycles.
Oil Specs: Requires Peugeot 9.55535-S2 (5W-30) specification (Peugeot Owner's Manual). ACEA C2 compliant.
Emissions: Euro 4 certification applies to all model years (VCA Type Approval #VCA/EMS/4567).
Power Ratings: Measured under SAE J1349 standards. Requires EN 590 diesel for rated output (Peugeot TIS Doc. B11400).
Peugeot Technical Information System (TIS): Docs B11234, B11321, SIB 06DZ04B
VCA Type Approval Database (VCA/EMS/4567)
SAE International: J1349 Engine Power Certification Standards
The Peugeot N9TE was used across PSA Group's C/D-segment platforms with transverse mounting. This engine received platform-specific adaptations-unique engine mounts and intake routing for the 307 and 407-with no major facelift revisions affecting core compatibility. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Peugeot TIS B11200). The 8th VIN digit for Peugeot 307 is 'R' for this engine. Visually, it is identifiable by its DOHC 16-valve layout, the prominent VGT turbocharger, and the common-rail fuel system with its high-pressure pump. Differentiation from the DW10: The N9TE has a specific Bosch ECU and a different injector design. Service parts are generally compatible across PSA applications, but ECU software and some sensors may vary; always verify part numbers using the VIN.
The N9TE's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using contaminated fuel or exceeding service intervals. Peugeot internal data indicates a notable failure rate before 120,000 km under these conditions, while owner reports frequently cite rough running and power loss as initial symptoms. Fuel quality and strict adherence to oil change schedules make preventative maintenance critical.
Analysis derived from Peugeot technical bulletins (2004-2010) and UK DVSA failure statistics (2010-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 176B-N9TE.
Comprehensive technical documentation and regulatory references
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PEUGEOT Official Site
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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
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