The Renault L7X 762 is a 2,993 cc, V6 turbo‑diesel engine produced between 2008 and 2015. It features an aluminium block and head, common rail direct injection, and a twin‑turbocharger setup. In standard form, it delivers 173 kW (235 PS) and 450 Nm of torque, engineered for refined, high — performance applications in premium Renault and Nissan models.
Fitted primarily to the Laguna III GT, Latitude, and Nissan Maxima QX, the L7X 762 was engineered for executive sedan perfor…
All production years meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/8901).
The Renault L7X 762 is a 2,993 cc V6 turbo‑diesel engineered for executive sedans (2008-2015). It combines common‑rail direct injection with a sequential twin‑turbo system to deliver smooth, high-torque performance across a broad rev range. Designed to meet Euro 5 standards, it balances power with emissions control for premium applications.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,993 cc | |
Fuel type | Diesel | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Twin-turbocharged | |
Bore × stroke | 86.0 mm × 86.0 mm | |
Power output | 173 kW (235 PS) | |
Torque | 450 Nm @ 1,500–3,000 rpm | |
Fuel system | Bosch CP4 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Sequential twin-turbo (Garrett) | |
Timing system | Chain (dual front‑mounted) | |
Oil type | Renault RN0700 (SAE 5W‑40) | |
Dry weight | 210 kg |
The Renault L7X 762 was used across Renault's D-segment platforms with longitudinal mounting. This engine received platform-specific adaptations-reinforced engine mounts for the Laguna III GT and revised cooling ducting for the Latitude-and featured a standardized DPF and EGR system across all applications. All adaptations are documented in OEM technical bulletins.
The L7X 762's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles subjected to poor fuel quality or incorrect oil. Renault internal service data indicates a high frequency of fuel system repairs, while UK DVSA MOT statistics show fuel system faults as a common cause of breakdowns for this engine. Neglecting fuel and oil quality accelerates wear, making preventative maintenance critical.
Analysis derived from Renault technical bulletins (2008-2015) and UK DVSA failure statistics (2015-2023). 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 L7X 762 is a powerful and smooth engine, but its reliability is heavily dependent on strict maintenance. Its main vulnerabilities are the high-pressure fuel pump and DPF system. With proactive use of correct fuel and oil, and adherence to service intervals, it can be a dependable long-term engine for executive driving.
The most frequent issues are high-pressure fuel pump failure (often due to fuel/oil quality), DPF clogging, and turbo actuator faults. EGR valve/cooler failures and oil leaks from gaskets are also common. These are well-documented in Renault service bulletins like 18E011.
The L7X 762 (235 PS dCi) was primarily used in the Renault Laguna III GT (2008–2015) and Latitude (2010–2015). It was also fitted to the Nissan Maxima QX (2009–2015) as part of the Renault-Nissan alliance, offering a premium diesel option.
Yes, the L7X 762 responds well to ECU remapping. Stage 1 tunes can safely increase power to around 270-280 PS and torque to 500-520 Nm. The twin-turbo setup and robust internals are generally capable of handling this increase, though fuel system health must be verified before tuning.
As expected for a 3.0L V6 diesel, economy is respectable but not class-leading. In a Laguna III GT, expect combined figures of ~7.0 L/100km (40 mpg UK). Real-world economy is typically 30-35 mpg UK, depending on driving style. Its strength is effortless high-speed cruising rather than urban frugality.
Yes. The L7X 762 is an interference engine. If either of the timing chains were to fail, the pistons would collide with the open valves, causing catastrophic internal engine damage. Fortunately, the dual chains are very durable with proper maintenance.
Renault mandates the use of RN0700 specification oil, typically a 5W-40 synthetic. Using the correct oil is absolutely critical for this engine, as it provides necessary lubrication for the high-pressure fuel pump and protects the twin-turbochargers and timing chains.
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).
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)
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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.
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