The Renault F9Q 738 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2007 and 2011. It features a cast iron block, aluminium cylinder head, double overhead camshafts (DOHC), and a variable geometry turbocharger (VGT) for responsive power delivery. Output ranges from 96 kW (130 PS) to 110 kW (150 PS), with peak torque of 300–320 Nm.
Fitted to models like the Mégane III, Scénic III, and Laguna III, the F9Q 738 was engineered for a blend of refinement, mid-range torque, and fuel efficiency. Emissions compliance for its production period was achieved through a diesel particulate filter (DPF) and exhaust gas recirculation (EGR), meeting Euro 4 standards.
A documented reliability concern involves premature failure of the high-pressure fuel pump, potentially leading to engine stalling. This issue, referenced in Renault Technical Note MEC 007 B, is often attributed to fuel contamination or inadequate lubrication. Later production runs incorporated revised pump components for improved durability.
Production years 2007–2011 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault F9Q 738 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 mid‑range pull and efficient highway cruising. Designed to meet Euro 4 standards, it balances everyday performance with 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 @ 2,000 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‑driven | |
| Oil type | Renault RN0700 / RN0710 (SAE 5W‑30) | |
| Dry weight | 165 kg |
The VGT provides strong mid-range torque ideal for overtaking but demands strict adherence to 20,000 km oil change intervals using Renault RN0700/0710 specification to prevent turbo bearing wear and chain tensioner issues. Ultra-low-sulfur diesel (EN 590) is mandatory to protect the Bosch CP3 fuel pump from premature failure, a known issue per Renault Technical Note MEC 007 B. DPF systems require regular highway driving for passive regeneration; frequent short trips can lead to clogging and expensive forced regenerations. EGR valve cleaning is recommended every 60,000 km to maintain emissions and performance.
Oil Specs: Requires Renault RN0700 or RN0710 (5W-30) specification (Renault Technical Note LUB 001).
Emissions: Euro 4 certification applies to all 2007-2011 models (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under EEC 80/1269 standards. Output varies by ECU mapping and model application (Renault EPC).
Renault Technical Information System: Docs MEC 007 B, LUB 001
Renault Workshop Manual 1307A
VCA Type Approval Database (VCA/EMS/5678)
The Renault F9Q 738 was used across Renault's B/C platform vehicles with transverse mounting. This engine received platform-specific adaptations-different intake manifolds for the Mégane versus the Laguna-but no major facelift revisions occurred during its production run, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Renault Workshop Manual 1307A). The 8th VIN digit typically corresponds to the engine code 'F9Q'. Visually, the engine is identifiable by its black plastic cam cover with 'dCi 16V' branding and the Garrett turbocharger mounted at the front. Critical differentiation from the earlier F9Q 736: The 738 variant has a different ECU part number (e.g., 8200778970) and a revised high-pressure fuel pump. Service parts are generally compatible across 2007-2011 F9Q 738 applications, but ECU software must match the specific vehicle model.
The F9Q 738's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles subjected to poor fuel quality or irregular maintenance. Renault internal data indicated a notable failure rate before 150,000 km under these conditions, while UK DVSA records show DPF-related issues are common in vehicles used predominantly for short urban journeys. Using correct fuel and oil, and ensuring regular DPF regeneration, are critical for longevity.
Analysis derived from Renault technical bulletins (2007-2011) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F9Q-738.
Comprehensive technical documentation and regulatory references
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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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