The Citroen NFR (TU5JP4) is a 1,360 cc, inline-four petrol engine produced between 2001 and 2015 as part of PSA Peugeot Citroën's TU engine family. It features a single overhead camshaft (SOHC), 8-valve configuration, and multi-point fuel injection (MPFI). In standard form, it delivers 65 kW (88 PS) at 5,750 rpm and 125 Nm of torque at 3,000 rpm, offering reliable performance for urban and light-duty driving.
Fitted to models such as the Citroen C3, C2, and Peugeot 206, the TU5JP4 was engineered for fuel efficiency, low maintenance, and compact packaging in B-segment hatchbacks. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, enabling Euro 3 certification for early builds and Euro 4 compliance for post-2005 variants. Its longitudinal mounting and front-wheel-drive layout made it ideal for PSA’s small car platforms.
One documented concern is cylinder head warping under sustained high-temperature operation, particularly in vehicles with delayed coolant changes or faulty thermostats. This issue, referenced in PSA Service Information Bulletin SIB-ENG-003-08, is linked to inadequate cooling system maintenance. From 2006, revised cylinder head bolts and updated thermostat designs were introduced to improve thermal stability and reduce failure incidence.
Production years 2001–2005 meet Euro 3 standards; 2006–2015 models comply with Euro 4 (VCA UK Type Approval #VCA/EMS/4321).
The Citroen NFR (TU5JP4) is a 1,360 cc inline-four petrol engine designed for compact city cars (2001–2015). It uses multi-point fuel injection and a SOHC 8-valve layout to deliver balanced performance and economy. Engineered to meet Euro 3 and later Euro 4 emissions standards, it prioritizes reliability and ease of service in entry-level applications.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,360 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 78.5 mm × 70.0 mm | |
| Power output | 65 kW (88 PS) @ 5,750 rpm | |
| Torque | 125 Nm @ 3,000 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 3 (pre-2006); Euro 4 (2006–2015) | |
| Compression ratio | 10.4:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (SOHC) | |
| Oil type | PSA B71 2010 (SAE 10W-40) | |
| Dry weight | 98 kg |
The naturally aspirated design provides predictable low-to-mid range performance ideal for city driving but requires strict adherence to 60,000 km or 4-year timing belt replacement intervals to prevent valve damage. PSA B71 2010 (10W-40) oil is recommended for optimal camshaft and lifter lubrication. Coolant should be replaced every 3 years to prevent head warping and thermostat failure. The MPFI system is robust but sensitive to poor fuel quality; use of EN 228-compliant petrol is advised. Post-2006 models benefit from improved head bolt torque sequencing and updated thermostat assemblies.
Oil Specs: Requires PSA B71 2010 (10W-40) specification (PSA SIB-ENG-003-08). Compatible with ACEA A1/B1.
Emissions: Euro 4 certification applies to 2006–2015 models only (VCA Type Approval #VCA/EMS/4321). Pre-2006 units meet Euro 3.
Power Ratings: Measured under ISO 1585 standards. Output assumes clean air filter, correct ignition timing, and 95 RON fuel (PSA TIS Doc. B21300).
PSA Technical Information System (TIS): Docs B21000, B21250, SIB-ENG-003-08
VCA Type Approval Database (VCA/EMS/4321)
ISO 1585 Road vehicles — Test method for the measurement of fuel consumption
The Citroen NFR (TU5JP4) was used across Citroen's C2/C3 platforms with longitudinal mounting and shared with Peugeot under PSA Group commonality agreements. This engine received platform-specific calibrations—slightly retuned throttle response in the C3 and revised exhaust tuning in the C2—and from 2006 the facelifted C3 adopted a redesigned intake manifold and updated ECU mapping, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the exhaust manifold (PSA TIS B21000). The 8th VIN digit indicates engine type ('B' for TU5 series). Pre-2006 models use a green camshaft cover with ribbed intake manifold; post-2006 units feature a black cover with smooth intake casting. Critical differentiation from TU5JP: TU5JP4 has revised ECU mapping and intake design. Service parts require model-year verification—timing belts and cylinder head gaskets for pre-2006 models are not compatible with later revisions due to bolt pattern and sealing changes (PSA SIB-ENG-003-08).
The TU5JP4's primary reliability risk is cylinder head warping, with elevated incidence in vehicles subjected to prolonged high-temperature operation. Internal PSA field reports from 2010 indicated a significant number of pre-2006 units required head resurfacing or replacement before 120,000 km, while UK DVSA data links a portion of emissions-related failures to lambda sensor degradation. Infrequent coolant changes and delayed timing belt service increase thermal and mechanical stress, making fluid maintenance critical.
Analysis derived from PSA technical bulletins (2005–2015) and UK DVSA failure statistics (2010–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN NFR-TU5JP4.
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Regulation (EC) No 715/2007
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