The Peugeot N9TEA is a 2,179 cc, inline‑four turbo‑diesel engine produced between 1997 and 2004. It features a single overhead camshaft (SOHC) with 8 valves and indirect injection with an electronically controlled turbocharger. This engine was designed to provide enhanced torque for Peugeot's executive models, delivering outputs of 80 kW (109 PS) and 250 Nm, offering improved pulling power over its predecessors.
Fitted primarily to the Peugeot 607 and 807, the N9TEA w…
Production years 1997–2004 meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/9012).
The Peugeot N9TEA is a 2,179 cc inline‑four turbo‑diesel engineered for executive sedans and MPVs (1997-2004). It combines a robust SOHC valvetrain with indirect injection and an electronically controlled turbocharger to deliver strong, accessible torque. Designed to meet Euro 2 standards, it balances performance with the emissions requirements of its era.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,179 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 86.0 mm × 94.0 mm | |
Power output | 80 kW (109 PS) @ 4,000 rpm | |
Torque | 250 Nm @ 1,900 rpm | |
Fuel system | Indirect injection, Bosch VP44 rotary pump | |
Emissions standard | Euro 2 | |
Compression ratio | 18.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Electronically controlled wastegate (Garrett) | |
Timing system | Belt-driven | |
Oil type | Mineral 15W‑40 diesel specification | |
Dry weight | 175 kg |
The Peugeot N9TEA was used across Peugeot's 607/807 platforms with longitudinal mounting. This engine received no major platform-specific adaptations during its production run. All technical specifications are consistent across the model range. All adaptations are documented in OEM technical bulletins.
The N9TEA's primary reliability risk is failure of the turbocharger wastegate actuator, often due to diaphragm rupture or vacuum line leaks. Peugeot service data indicates this is a frequent cause of overboost fault codes and limp mode. The Bosch VP44 injection pump is also sensitive to fuel quality and requires strict adherence to filter change intervals. Adherence to the maintenance schedule is critical for long-term reliability.
Analysis derived from Peugeot technical bulletins (1997-2004) and UK DVSA failure statistics (2005-2015). 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 N9TEA is a robust engine if its specific maintenance needs are met. Its main vulnerabilities are the turbo actuator and the Bosch VP44 injection pump. With strict adherence to oil and fuel filter change intervals, and prompt attention to boost control issues, it can be very reliable and achieve high mileages.
The most frequent issues are turbocharger wastegate actuator failure causing limp mode, Bosch VP44 injection pump failure, timing belt failure, and EGR valve clogging. These are all well-documented in Peugeot service manuals for the 607 and 807.
The N9TEA engine was used in the Peugeot 607 (1999-2004) and the Peugeot 807 (2002-2004), specifically in the 2.2 HDi variants. It was not used in other Peugeot models or licensed to other manufacturers during this period.
Minor tuning is possible. The most common modification is remapping the engine ECU to increase fuel delivery and boost pressure. Significant power gains are limited by the engine's indirect injection design and require supporting modifications to the cooling and fuel systems to ensure reliability.
Moderate for its size. A well-maintained Peugeot 607 2.2 HDi can achieve around 8.0 L/100km (35 mpg UK) on the highway and 11.5 L/100km (25 mpg UK) in the city. Real-world combined figures typically range from 28 to 32 mpg (UK), reflecting its focus on torque for a heavy vehicle.
Yes. The N9TEA is an interference engine. If the timing belt breaks or slips, the pistons will collide with the open valves, causing severe internal damage that requires a costly cylinder head rebuild or engine replacement.
A good quality mineral 15W-40 diesel engine oil meeting API CC or equivalent specification is mandatory. This viscosity is critical for protecting the engine's components under load. Synthetic oils were not specified for this engine and offer no significant advantage.
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
Type-approval guidance and documentation.
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