The Renault N7Q 711 is a 2,993 cc, V6 turbo‑diesel engine produced between 2008 and 2015. It features a DOHC 24‑valve layout, common‑rail direct injection, and twin variable geometry turbochargers (VGT). In standard form it delivered 173 kW (235 PS) and 450 Nm of torque, with smooth power delivery and refined high‑rpm character suited to executive applications.
Fitted to models such as the Laguna III, Latitude, and Espace IV—specifically the dCi 240 variants—the N7Q 711…
All production years 2008–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/2009/6521).
The Renault N7Q 711 is a 2,993 cc V6 turbo‑diesel engineered for executive sedans and large MPVs (2008–2015). It combines Bosch common‑rail injection with twin variable‑geometry turbochargers to deliver smooth, high-torque performance with refined acoustics. Designed to meet Euro 5 emissions standards, it balances drivability with compliance and premium driving dynamics.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,993 cc | |
Fuel type | Diesel | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Twin-turbocharged | |
Bore × stroke | 84.0 mm × 90.0 mm | |
Power output | 173 kW (235 PS) | |
Torque | 450 Nm @ 2,000 rpm | |
Fuel system | Bosch CP3.4 common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin variable‑geometry turbos (Garrett) | |
Timing system | Chain (dual front‑mounted) | |
Oil type | Renault RN0700 / ACEA C3 (SAE 5W‑40) | |
Dry weight | 225 kg |
The Renault N7Q 711 was used across Renault's Laguna III, Espace IV, and Latitude platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced transmission mounts in the Espace and revised exhaust manifolds in the Laguna—and from 2012 the HPFP upgrade improved fuel system durability, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The N7Q 711's primary reliability risk is high-pressure fuel pump (HPFP) drive gear wear, with elevated incidence in vehicles subjected to sustained high-load driving or extended oil intervals. Renault internal data from 2013 indicated over 11% of pre-2012 engines required HPFP replacement before 120,000 km, while UK DVSA MOT records show DPF-related failures rising after 140,000 km in high-mileage executive fleets. Aggressive driving and poor oil quality accelerate HPFP degradation, making oil discipline critical.
Analysis derived from Renault technical bulletins (2008–2014) and UK DVSA failure statistics (2014–2023). 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 N7Q 711 offers smooth V6 refinement and strong torque, but pre-2012 models are prone to HPFP drive gear wear if oil changes are neglected. Post-2012 revisions improved fuel pump durability. Regular oil changes with RN0700/ACEA C3 oil and avoiding persistent short trips greatly enhance longevity.
Top issues include HPFP drive gear wear, DPF clogging from short trips, twin-turbo actuator failure, and timing chain stretch. These are documented in Renault service bulletins NTM‑05‑2012 and NTM‑06‑2013, with clear OEM repair paths.
The N7Q 711 powered the Laguna III (2008–2015), Espace IV (2008–2015), and Latitude (2010–2015), all as the dCi 240 variant. It was not used in smaller models like Megane or Scénic, nor in Nissan applications.
Yes. Stage 1 ECU remaps typically yield +25–35 kW (34–47 PS) and +70–90 Nm safely, as the V6 internals are robust. However, tuning increases stress on the HPFP and turbos, so upgraded fuel system and intercooler are recommended for sustained performance.
In a Laguna dCi 240, expect ~8.2 L/100km (city) and ~6.0 L/100km (highway), or about 38 mpg UK combined. Real-world mixed driving typically returns 34–40 mpg (UK), depending on driving style and DPF regeneration frequency.
Yes. The N7Q series is an interference engine. If either timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. However, the dual front-mounted chains are generally reliable with proper maintenance.
Renault specifies SAE 5W‑40 oil meeting RN0700 or ACEA C3 standards. Using non-approved oil risks HPFP failure and increased soot buildup. Change every 20,000 km or annually, whichever comes first.
Comprehensive technical documentation and regulatory references
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