The Renault P9X 715 is a 2,998 cc, V6 turbo‑diesel engine produced between 2007 and 2015. It features a DOHC 24‑valve layout, common‑rail direct injection, and a twin‑turbocharger system, delivering 173 kW (235 PS) and 450 Nm of torque. The sequential twin‑turbo arrangement enables strong low‑rpm response while maintaining high‑end power.
Fitted to premium models such as the Renault Laguna III, Vel Satis, and Espace IV, the P9X 715 was engineered for refined performance and long‑distance comfort. Emissions compliance was achieved through cooled exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), allowing adherence to Euro 5 standards across its production run.
One documented concern is premature wear of the high-pressure fuel pump drive coupling, highlighted in Renault Service Bulletin 3021B. This issue stems from torsional stress during rapid throttle transitions, particularly in high-mileage or frequently loaded applications. From 2011, revised coupling materials and updated ECU mapping reduced failure rates.
All production years 2007–2015 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/4321).
The Renault P9X 715 is a 2,998 cc V6 turbo‑diesel engineered for executive and MPV applications (2007–2015). It combines Bosch common‑rail injection with a sequential twin‑turbocharger system to deliver smooth, linear torque and refined high-speed performance. Designed to meet Euro 5 standards from launch, it integrates advanced aftertreatment for urban compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,998 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 @ 1,750–3,000 rpm | |
| Fuel system | Bosch CP3.4 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 GT15 + GT20) | |
| Timing system | Chain (front‑mounted, dual camshafts per bank) | |
| Oil type | Renault RN0700 (ACEA B4, SAE 5W‑40) | |
| Dry weight | 245 kg |
The sequential twin-turbo system provides seamless torque delivery ideal for motorway cruising but demands strict adherence to 15,000 km oil change intervals using Renault RN0700 (5W-40) to protect the high-pressure fuel pump drive coupling. Extended high-load operation or aggressive throttle use accelerates coupling wear—especially in pre-2011 engines. The DPF and EGR systems require periodic regeneration; sustained low-speed driving may trigger limp mode. Post-2011 engines feature reinforced coupling materials per Renault SIB 3021B. Always use EN 590-compliant ultra-low-sulfur diesel to prevent injector and pump degradation.
Oil Specs: Requires Renault RN0700 (5W-40, ACEA B4) specification (Renault SIB 3021B). Not interchangeable with RN0720 C3 oils.
Emissions: Euro 5 certification applies to all 2007–2015 models (VCA Type Approval #VCA/EMS/4321). No market-specific deviations.
Power Ratings: Measured under UN ECE R85 standards. Output consistent across all applications (Renault TIS Doc. P9X‑A215).
Renault Technical Information System (TIS): Docs P9X‑A205, P9X‑A210, P9X‑A212, SIB 3021B
VCA Type Approval Database (VCA/EMS/4321)
UN Regulation No. 85 (Engine Power Measurement)
The Renault P9X 715 was used across Renault's executive platforms with longitudinal mounting and co-developed with Nissan for limited shared use. This engine received platform-specific adaptations—reinforced engine mounts in the Espace IV and revised cooling in the Laguna III GT—and from 2011 the Laguna III received updated fuel pump couplings and ECU calibration, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crank pulley (Renault TIS P9X‑A225). The 7th and 8th VIN digits for Renault models are '71'. Visual identification: black aluminum valve covers with 'dCi 235' decal and dual turbochargers (small primary + larger secondary). Critical differentiation from P9X 720 (265 PS): P9X 715 uses Bosch EDC16C39 ECU with single diagnostic port; P9X 720 uses EDC17C48. Fuel pump coupling part number 0445010088 confirms P9X 715. Pre-2011 and post-2011 couplings are not interchangeable due to material upgrade (Renault SIB 3021B).
The P9X 715's primary reliability risk is high-pressure fuel pump drive coupling wear in high-load or aggressive driving conditions, with elevated incidence in fleet or towing applications. Renault internal field data from 2013 indicated a notable share of pre-2011 couplings requiring replacement before 120,000 km, while UK DVSA MOT records show DPF-related failures rising in vehicles with predominantly short journeys. Extended high-RPM operation and poor fuel quality accelerate pump and aftertreatment stress, making oil/fuel specification adherence critical.
Analysis derived from Renault technical bulletins (2010–2015) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT P9X-715.
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.
GOV.UK: Vehicle Approval
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