The Renault F9Q 674 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2001 and 2008. It marked a significant evolution from its predecessor, featuring common‑rail direct injection, a variable‑geometry turbocharger (VGT), and dual overhead camshafts (DOHC). This technology delivered outputs around 81 kW (110 PS) and 240 Nm of torque, providing a marked improvement in refinement and responsiveness over indirect injection units.
Fitted to popular mode…
Production years 2001–2004 meet Euro 3 standards; 2005–2008 models may have Euro 4 compliance depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Renault F9Q 674 is a 1,870 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2001-2008). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver strong mid‑range torque and improved fuel efficiency. Designed to meet Euro 3 (and some market‑specific Euro 4) standards, it offers a balance of performance and economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,870 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 82.0 mm × 88.4 mm | |
Power output | 81 kW (110 PS) | |
Torque | 240 Nm @ 1,750 rpm | |
Fuel system | Common-rail direct injection (Siemens/VDO) | |
Emissions standard | Euro 3 (pre‑2005); Euro 4 depending on market | |
Compression ratio | 18.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Variable‑geometry turbo (Garrett VNT) | |
Timing system | Chain‑driven | |
Oil type | ACEA B3/B4 (SAE 5W‑40) | |
Dry weight | 170 kg |
The Renault F9Q 674 was used across Renault's Mégane/Scénic platforms with transverse mounting and was not licensed to other manufacturers. This engine received minimal platform-specific adaptations and from 2005 the facelifted Laguna II models adopted minor ECU revisions for emissions, creating subtle interchange limits. All adaptations are documented in OEM technical bulletins.
The F9Q 674's primary reliability risk is dual-mass flywheel (DMF) failure, with elevated incidence in vehicles subjected to aggressive driving or frequent stop-start cycles. Renault technical notes document this as a common service item, while its electronically controlled systems generally ensure good long-term durability with basic maintenance. Adherence to oil change intervals and using quality fuel are critical for minimizing injector and turbo wear.
Analysis derived from Renault technical bulletins (2001-2008) 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
Yes, the F9Q 674 is generally reliable long-term if basic maintenance is followed. Its main weakness is the dual-mass flywheel, which can fail prematurely with aggressive driving. Regular oil changes and using quality fuel are key to protecting the common-rail system and turbocharger for long-term durability.
The most common issues are failing dual-mass flywheels causing vibration, clogged EGR valves and coolers, failures in the high-pressure fuel pump or injectors, and problems with the variable-geometry turbo actuator. These are well-documented in Renault service information.
The F9Q 674 was used in the second-generation Renault Mégane (BM/CM, 2002-2008), Scénic (JM, 2003-2008), and Laguna (BG, 2001-2007), typically badged as the '1.9 dCi 110'. It was not used in the Kangoo or Clio of that era.
Yes, the F9Q 674 responds well to ECU remapping. Stage 1 tunes can safely increase power to around 130-140 PS and torque to 280-300 Nm. The engine's internals are robust, but supporting modifications like a larger intercooler are recommended for higher power levels to ensure reliability.
Fuel economy is very good for its era. Expect around 6.0-7.0 L/100km (40-47 mpg UK) combined in a Mégane or Scénic. Real-world figures vary with driving style, with highway driving yielding the best results. The common-rail system contributes to its efficiency.
Yes. The F9Q 674 is an interference engine. If the timing chain were to fail or jump, the pistons and valves will collide, causing severe internal engine damage. This makes regular inspection of the timing chain tensioner and guides critical.
Renault specifies an oil meeting ACEA B3 or B4 standards. A 5W-40 viscosity is typical. Using a quality diesel-specific oil and changing it every 15,000 km is crucial for protecting the high-pressure fuel system, turbocharger, and minimizing soot buildup in the engine.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with RENAULT or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
RENAULT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialRENAULT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.