The Vauxhall S9W 702 is a 2,998 cc, V6 turbo‑diesel engine sourced from Renault and produced between 2010 and 2018. It features common‑rail direct injection, twin variable‑geometry turbochargers (twin‑VGT), and dual overhead camshafts (DOHC) per bank. In standard form it delivered 173 kW (235 PS) and 450 Nm of torque, with higher — output variants reaching 177 kW (240 PS) and 520 Nm.
Fitted exclusively to the Vauxhall Insignia A OPC/VXR, the S9W 702 was engineered for high…
All production years (2010–2018) meet Euro 5 emissions standards .
The Vauxhall S9W 702 is a 2,998 cc V6 twin‑turbo diesel engineered for high‑performance executive models (2010–2018). It combines Bosch common‑rail injection with twin variable‑geometry turbochargers to deliver strong low‑ and mid‑range torque and refined highway performance. Designed to meet Euro 5 standards, it balances sporty output with emissions control and fuel economy.
| 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 | 173–177 kW (235–240 PS) | |
Torque | 450–520 Nm @ 1,750–3,000 rpm | |
Fuel system | Bosch CP3.4 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 15.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin variable‑geometry turbos (Garrett) | |
Timing system | Chain (front‑mounted, dual chains) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 215 kg |
The Vauxhall S9W 702 was used exclusively in the Vauxhall Insignia A OPC/VXR platform with longitudinal mounting and sourced under license from Renault. This engine received performance-specific adaptations—including reinforced engine mounts, high-flow intercoolers, and unique ECU calibration—and from 2014 the HPFP drive gear was updated to address wear concerns, creating minor service part distinctions. 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.
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The S9W 702 is generally robust when maintained properly. Key concerns include HPFP drive gear wear in pre-2014 Insignia OPC/VXR models and DPF clogging from short trips. Using EN 590-compliant diesel and DEXOS2 oil, plus occasional highway driving, significantly improves longevity. Post-2014 revisions addressed the drive gear issue.
Top issues are high-pressure fuel pump drive gear wear (pre-2014), DPF overloading from urban driving, EGR valve carbon binding, and minor timing chain tensioner wear. These are documented in Vauxhall service bulletins like SIB 08 15 06. Most are preventable with correct fuel, oil, and driving habits.
The S9W 702 powered only the Vauxhall Insignia A OPC/VXR (2010–2018) in 235 PS and 240 PS diesel forms. It is a Renault-sourced 3.0 dCi V6 unit used under license and not shared with other Vauxhall models. All units meet Euro 5 emissions standards.
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.
Official NEDC figures range from 6.8–7.4 L/100km (38–42 mpg UK). Real-world mixed driving typically yields 8.0–9.5 L/100km (30–35 mpg UK). Highway efficiency can reach 6.2 L/100km (46 mpg UK), while city driving may exceed 10.0 L/100km.
Yes. The S9W 702 is an interference engine. If either timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. However, the front-mounted dual-chain design has shown high durability in service, with no major recalls to date.
Vauxhall specifies DEXOS2 5W‑30 synthetic oil. This low-SAPS formulation protects the DPF and turbocharger. Oil changes are required every 15,000 km or 12 months. Using non-DEXOS2 oil may void warranty and accelerate DPF clogging.
Comprehensive technical documentation and regulatory references
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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)
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.
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