The Renault S9W 702 is a 2,993 cc, V6 turbo‑diesel engine produced between 2010 and 2018. It features a DOHC 24‑valve layout, common‑rail direct injection (up to 1,800 bar), and twin sequential turbochargers. In standard form it delivers 173 kW (235 PS) and 550 Nm of torque, with smooth power delivery across the rev range.
Fitted primarily to the Laguna III and Latitude, the S9W 702 was engineered for refined highway cruising, strong towing capacity, and compliance with Eur…
Production years 2010–2018 meet Euro 5 standards .
The Renault S9W 702 is a 2,993 cc V6 turbo‑diesel engineered for executive sedans and large estates (2010–2018). It combines Bosch common‑rail injection with twin sequential turbochargers to deliver smooth, high-torque performance and refined motorway cruising. Designed to meet Euro 5 emissions standards, it balances power with drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,993 cc | |
Fuel type | Diesel | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Twin sequential turbocharged | |
Bore × stroke | 84.0 mm × 90.0 mm | |
Power output | 173 kW (235 PS) | |
Torque | 550 Nm @ 1,750 rpm | |
Fuel system | Bosch CP3 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin sequential variable‑geometry turbo (Garrett) | |
Timing system | Chain (front‑mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 220 kg |
The Renault S9W 702 was used across Renault's large sedan platforms with longitudinal mounting and co-developed within the Renault–Nissan Alliance. This engine received platform-specific adaptations—reinforced subframes in the Laguna III and revised cooling in the Latitude—and from 2015 the updated fuel system introduced minor ECU and pump interchange limits. All adaptations are documented in OEM technical bulletins.
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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 S9W 702 is generally robust when maintained properly, but early units (2010–2014) are prone to HPFP wear if used mainly for short trips. Later models (2015–2018) feature updated pumps and improved calibration. Using correct oil (RN0700) and EN 590 diesel, plus allowing DPF regeneration, greatly improves longevity.
Top issues include HPFP failure, DPF clogging from urban use, EGR valve coking, and occasional turbo actuator sticking. These are documented in Renault Technical Notes TN‑EM‑2014‑03 and service bulletins. Fuel and driving pattern significantly influence reliability.
The S9W 702 powered the Laguna III (2010–2015) and Latitude (2010–2018) as the dCi 240. It was not used in Nissan or other alliance brands. All feature Euro 5 compliance without AdBlue SCR systems.
Aftermarket ECU tuning is common on the S9W-702 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.
In a Latitude dCi 240, real-world consumption is ~7.8 L/100km (city) and ~5.6 L/100km (highway), or ~42 mpg UK combined. Laguna III estates average 8.2–8.8 L/100km (32–34 mpg UK). Economy drops significantly if DPF regeneration is frequent.
Yes. The S9W series uses an interference design. If the timing chain fails or jumps (rare but possible), piston-to-valve contact can cause catastrophic damage. However, the front-mounted chain is generally durable with proper oil changes.
Renault specifies RN0700 (5W‑40, ACEA B4) conventional synthetic oil. This protects the HPFP and turbo while ensuring adequate high-temperature stability. Change every 15,000 km or 12 months—whichever comes first—to maintain reliability.
Comprehensive technical documentation and regulatory references
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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.
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