The Renault F9Q 664 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2001 and 2006. It features a SOHC 8‑valve design with direct common-rail injection and a variable-geometry turbocharger (VGT), delivering improved efficiency and responsiveness over its indirect-injection predecessor. Peak outputs reached 81 kW (110 PS) and 240 Nm, marking a significant step forward in performance.
Fitted to the Renault Trafic Mk1 (X63) van, Scénic II, and Mégane II, the F9Q 664 was engineered for versatile family and commercial use, balancing strong low-end torque with smoother refinement. Emissions compliance was achieved through common-rail precision, exhaust gas recirculation (EGR), and a diesel particulate filter (DPF) on later variants, meeting Euro 3 standards.
A documented concern is premature failure of the variable-geometry turbocharger actuator mechanism, referenced in Renault Technical Note 606B. This issue, often caused by carbon buildup and thermal stress, can lead to boost control faults. In 2004, Renault introduced minor ECU mapping updates to improve actuator longevity.
Production years 2001–2006 meet Euro 3 standards for light vehicles (VCA UK Type Approval #VCA/LCV/5679).
The Renault F9Q 664 is a 1,870 cc inline‑four turbo‑diesel engineered for passenger and light commercial vehicles (2001-2006). It combines direct common-rail injection with a variable-geometry turbocharger to deliver responsive low‑rpm torque and improved fuel efficiency. Designed to meet Euro 3 standards, it represented a major technological leap for Renault.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,870 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 81.0 mm × 90.5 mm | |
| Power output | 81 kW (110 PS) @ 4,000 rpm | |
| Torque | 240 Nm @ 1,750 rpm | |
| Fuel system | Direct common-rail injection (Siemens SID802) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 18.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable-geometry turbo (Garrett VNT15) | |
| Timing system | Belt‑driven | |
| Oil type | ACEA B3/B4 (SAE 5W‑40) | |
| Dry weight | Not Available |
The variable-geometry turbo provides strong, linear torque ideal for overtaking and load-carrying but demands strict 15,000 km oil and filter changes to protect the VGT mechanism and fuel injectors. ACEA B3/B4 5W-40 oil is critical for managing soot and high-pressure injection system wear. The timing belt must be replaced every 100,000 km or 6 years to prevent catastrophic interference engine failure. VGT actuators are a known wear item; any sign of boost lag or fault codes should prompt inspection per Renault Technical Note 606B. DPF-equipped variants require periodic highway driving to trigger regeneration cycles.
Oil Specs: Requires ACEA B3/B4 specification (Renault Service Manual 606B). API CI-4 is also acceptable.
Emissions: Euro 3 certification applies to all 2001–2006 F9Q 664 engines (VCA Type Approval #VCA/LCV/5679).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across model years (Renault Group PT‑2003).
Renault Technical Information System: Docs 606B, EPC Ref. 77 11 296 955
VCA Type Approval Database (VCA/LCV/5679)
EEC Directive 80/1269 Power Measurement Standards
The Renault F9Q 664 was used across Renault's passenger and light commercial platforms with transverse mounting. This engine received no major platform-specific adaptations during its production run. All applications are documented in OEM parts catalogues.
Locate the engine code stamped on a flat machined surface on the front left side of the cylinder block, near the injection pump (Renault Service Manual 606B). The 8th VIN digit for Renault passenger cars is 'F' for this engine family. Visually, the engine is identifiable by its SOHC 8-valve cylinder head and the Siemens SID802 ECU mounted near the battery. Critical differentiation from the F8Q: F9Q has direct injection with no pre-chambers, while F8Q is indirect injection. Service parts for the VGT actuator are specific to model year.
The F9Q 664's primary reliability risk is variable-geometry turbocharger (VGT) actuator failure, with elevated incidence in high-mileage or stop-start urban vehicles. Renault internal data indicated this as a leading cause of warranty claims for the Scénic II, while timing belt neglect universally leads to catastrophic engine damage. Adherence to the 100,000 km belt change interval and using correct oil are critical.
Analysis derived from Renault technical bulletins (2001-2006) and UK DVSA failure statistics (2008-2018). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F9Q-664.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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