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…
Production years 2001–2006 meet Euro 3 standards for light vehicles .
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 | Refer to vehicle handbook / manufacturer specification | |
Dry weight | Not Available |
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.
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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 manufacturer technical service bulletins and industry workshop records. 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 F9Q 664 is generally robust with proper maintenance. Its main weaknesses are the VGT actuator and timing belt. Replacing the belt every 100,000 km and using correct oil are essential. Addressing VGT issues promptly prevents turbo damage. Many examples exceed 250,000 km with diligent care.
The top issues are VGT actuator failure (causing boost loss/lack of power), timing belt failure (causing total engine destruction), EGR valve clogging (rough idle), and injector coil failure (misfires). These are well-documented in Renault service literature.
This 1.9L diesel was used in the Renault Trafic I (2001-2006), Scénic II (2003-2006), and Mégane II (2003-2006), all badged as 1.9 dCi. It was a core engine for Renault's transition to common-rail diesel technology.
Aftermarket ECU tuning is common on the F9Q-664 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Real-world fuel economy is very good. Expect approximately 6.5 L/100km (43 mpg UK) combined for a Scénic II. Highway cruising can yield ~5.5 L/100km (51 mpg UK), while heavy urban use may see 8.0 L/100km (35 mpg UK) or more.
Yes. The F9Q 664 is an interference engine. If the timing belt breaks or slips, the pistons will collide with the open valves, causing severe internal damage that often requires a full engine rebuild or replacement. Belt changes are non-negotiable.
Renault specifies an oil meeting ACEA B3/B4 standards, typically SAE 5W-40 for this engine. Using a high-quality diesel-specific oil is crucial for protecting the turbo, injectors, and managing soot. Change intervals should not exceed 15,000 km.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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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