The Renault F9Q 748 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2007 and 2011. It features a DOHC valvetrain, common rail direct injection, and a variable geometry turbocharger (VGT), delivering outputs between 96 kW (130 PS) and 110 kW (150 PS) with peak torque of 300–320 Nm. Its robust cast iron block provides durability for high-mileage applications.
Fitted to models such as the Megane III, Scénic III, and Laguna III, the F9Q 748 was engineered for a blend of everyday refinement, strong mid-range torque, and respectable fuel economy. Emissions compliance for its production period was achieved through a diesel particulate filter (DPF) and exhaust gas recirculation (EGR), meeting Euro 4 standards.
One documented concern is premature failure of the high-pressure fuel pump, potentially leading to a no-start condition. This issue, referenced in Renault Service Bulletin MEG‑07‑012, is often linked to fuel contamination or inadequate lubrication from low-quality diesel. Later production runs incorporated revised pump internals for improved reliability.
Production years 2007–2011 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault F9Q 748 is a 1,870 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2007-2011). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑ to mid‑rpm torque and efficient highway cruising. Designed to meet Euro 4 standards, it balances performance with fuel economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,870 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 80.0 mm × 93.0 mm | |
| Power output | 96–110 kW (130–150 PS) | |
| Torque | 300–320 Nm @ 1,750–2,500 rpm | |
| Fuel system | Bosch CP3 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0700/RN0710 (SAE 5W‑30) | |
| Dry weight | 165 kg |
The VGT turbo provides accessible torque for relaxed driving but demands strict adherence to 20,000 km or 12-month oil change intervals using RN0700/RN0710 specification to protect the turbo bearings and timing chain. Ultra-low-sulfur diesel (ULSD) meeting EN 590 standards is mandatory to prevent premature high-pressure fuel pump failure. The DPF system requires periodic highway driving for passive regeneration; frequent short trips can lead to filter clogging and limp mode. EGR valve cleaning is recommended every 80,000 km to maintain emissions and performance.
Oil Specs: Requires Renault RN0700 or RN0710 (5W-30) specification (Renault Owner's Manual). ACEA C3/C4 compliant.
Emissions: Euro 4 certification applies to all 2007–2011 models (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ECE R85 standards. Output varies by model application and ECU calibration (Renault TIS Doc. F9Q‑004).
Renault Technical Information System (TIS): Docs F9Q‑001, F9Q‑002, F9Q‑003, SIB MEG‑07‑012
VCA Type Approval Database (VCA/EMS/5678)
UNECE Regulation No. 85 (Engine Power Measurement)
The Renault F9Q 748 was used across Renault's Megane III/Scénic III platforms with transverse mounting. This engine received platform-specific adaptations-different intake manifolds and engine mounts for the Laguna III-creating minor service part variations. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the gearbox flange (Renault TIS F9Q‑006). The 8th VIN digit typically corresponds to the engine code ('F' for F9Q series). Visually, the engine is identifiable by its black plastic camshaft cover and the Garrett turbocharger on the exhaust manifold. Critical differentiation from the earlier F9Q: The F9Q 748 uses a Bosch EDC16C3 ECU. Service parts, particularly for the fuel system, are specific to the 748 variant and not interchangeable with other F9Q engines without verification.
The F9Q 748's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel. Renault internal reports from 2010 indicated a significant number of warranty claims for pump replacement before 100,000 km, while UK DVSA data shows DPF-related faults as a common MOT advisory item. Extended low-speed driving and infrequent oil changes accelerate EGR and DPF clogging, making fuel quality and service adherence critical.
Analysis derived from Renault technical bulletins (2007-2012) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F9Q-748.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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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