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 Euro 5 emissions standards. Exhaust after‑treatment includes a diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and exhaust gas recirculation (EGR), though it lacks selective catalytic reduction (SCR) with AdBlue.
One documented concern is high-pressure fuel pump (HPFP) failure due to insufficient lubrication from ultra-low-sulfur diesel, highlighted in Renault Technical Note TN‑EM‑2014‑03. From 2015, revised pump internals and updated fuel filtration mitigated premature wear.
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 twin-turbo V6 provides seamless torque ideal for highway cruising and towing but demands strict adherence to 15,000 km or 12-month oil change intervals to protect the HPFP and turbo bearings. Renault RN0700 (5W‑40 ACEA B4) oil is essential to maintain fuel system integrity and prevent soot-related wear. Frequent short trips without DPF regeneration can trigger limp mode. Use only EN 590 ultra-low-sulfur diesel (ULSD) to prevent CP3 pump degradation. Post-2015 units include updated HPFP components per Renault TN‑EM‑2014‑03.
Oil Specs: Requires Renault RN0700 (5W‑40, ACEA B4) specification (Renault SB‑LUB‑2011).
Emissions: Euro 5 applies to all 2010–2018 S9W 702 builds (VCA Type Approval #VCA/EMS/4321).
Power Ratings: Measured under UN ECE R85. Power output assumes EN 590 diesel fuel quality (Renault TIS Doc. S9W‑A05).
Renault Technical Information System (TIS): Docs S9W‑A01 to S9W‑A05, TN‑EM‑2014‑03
VCA Type Approval Database (VCA/EMS/4321)
UN Regulation No. 85 (Engine Power Measurement)
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.
Locate the engine code stamped on the front timing cover near the crank pulley (Renault TIS S9W‑A07). The 7th VIN digit for Renault models is 'D' for diesel V6 variants. Pre-2015 units use Bosch EDC16C39 ECU with round OBD port; post-2015 Euro 5+ models use EDC17C48 with updated fuel calibration. Critical differentiation from S9W 700: S9W 702 has twin sequential turbos and 550 Nm torque; S9W 700 is single-turbo with 450 Nm. HPFP part numbers differ before/after 01/2015 (Renault TN‑EM‑2014‑03).
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.
Find answers to most commonly asked questions about RENAULT S9W-702.
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