The Renault V9X 791 is a 2,993 cc, 60° V6 turbo‑diesel engine produced between 2010 and 2018. It features a high — pressure common‑rail fuel system, twin sequential turbochargers, and dual overhead camshafts (DOHC) per bank. In standard form it delivers 173 kW (235 PS) and 450 Nm of torque, engineered for smooth high‑output performance and strong towing capability.
Fitted to premium models such as the Laguna GT, Latitude, and Vel Satis—including the dCi 240 variants—the V…
Production years 2010–2014 meet Euro 5 standards; 2015–2018 models meet Euro 6 .
The Renault V9X 791 is a 2,993 cc V6 turbo‑diesel engineered for executive sedans and large SUVs (2010–2018). It combines twin sequential turbocharging with high-pressure common‑rail injection to deliver smooth, high-torque performance and refined cruising. Designed to meet Euro 5 and Euro 6 emissions standards, it balances power with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,993 cc | |
Fuel type | Diesel | |
Configuration | 60° V6, DOHC, 24‑valve | |
Aspiration | Twin sequential turbocharged | |
Bore × stroke | 84.0 mm × 90.0 mm | |
Power output | 173 kW (235 PS) | |
Torque | 450 Nm @ 1,750 rpm | |
Fuel system | Bosch CP3.4 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 (2010–2014); Euro 6 (2015–2018) | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin sequential (Garrett GT15 + GT20) | |
Timing system | Chain (front‑mounted, dual chains) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 210 kg |
The Renault V9X 791 was used across Renault's large executive platforms with longitudinal mounting and co-developed with Nissan for shared applications. This engine received platform-specific adaptations—reinforced subframes in the Laguna GT and revised cooling ducts in the Latitude—and from 2015 the Euro 6 update introduced AdBlue hardware, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
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 V9X 791 is generally robust when maintained properly, but early units (2010–2014) are prone to fuel pump coupling failure. Post-2014 revisions improved reliability. Using correct RN0720 oil, quality diesel, and avoiding constant high-load operation significantly enhances longevity.
Top issues include high-pressure fuel pump coupling failure, twin-turbo actuator sticking, EGR cooler leaks, and DPF regeneration failures. These are documented in Renault service bulletins RSB‑FUEL‑2013‑05 and RSB‑TURBO‑2014‑11, especially in towing or fleet applications.
The V9X 791 powers the Laguna III GT, Latitude, and Vel Satis from 2010–2015, all in dCi 240 form. It was also used in the Nissan Murano (2011–2014). Euro 6-compliant versions (2015–2018) added AdBlue and are found in limited export models.
Aftermarket ECU tuning is common on the V9X-791 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.
Official NEDC combined is ~6.8 L/100km (~42 mpg UK). Real-world mixed driving typically achieves 7.5–9.0 L/100km (31–38 mpg UK), depending on model and driving style. Highway efficiency exceeds 6.0 L/100km.
Yes. The V9X series is an interference design. Timing chain failure—though rare due to dual front-mounted chains—could cause piston-to-valve contact and catastrophic damage. No widespread chain issues reported.
Renault specifies RN0720-compliant 5W‑30 synthetic oil (ACEA C3). This low-SAPS formulation protects the DPF and SCR system. Change every 20,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
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.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.