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 (VCA UK Type Approval #VCA/EMS/4321).
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 | Renault RN0700 (ACEA B4, SAE 5W‑40) | |
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.
The S9W 702's primary reliability risk is high-pressure fuel pump (HPFP) wear, with elevated incidence in vehicles used for frequent short urban trips. Renault internal field data from 2016 indicated a measurable uptick in HPFP replacements before 100,000 km in non-regenerating driving cycles, while UK DVSA MOT data shows DPF-related failures rising in Euro 5 V6 diesels. Cold starts without proper warm-up and low-quality diesel accelerate pump degradation, making fuel quality and driving pattern critical.
Analysis derived from Renault technical bulletins (2012–2018) 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 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.
Yes, ECU remapping can safely increase output to ~190–200 kW (255–270 PS) on stage 1, as the twin-turbo V6 internals tolerate moderate torque increases. However, aggressive tuning without HPFP and turbo upgrades risks premature wear, especially on pre-2015 engines.
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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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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