The Renault Z7W 706 is a 3,498 cc, 60° V6 naturally aspirated petrol engine produced between 2008 and 2015. It features dual overhead camshafts (DOHC), variable valve timing (VVT) on both intake and exhaust camshafts, and sequential multi — point fuel injection. In standard form it delivers 184 kW (250 PS) and 340 Nm of torque, engineered for smooth high — rev performance and refined highway cruising.
Fitted to premium models such as the Laguna GT, Latitude, and Vel Satis—in…
All production years 2008–2015 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/6543).
The Renault Z7W 706 is a 3,498 cc V6 naturally aspirated petrol engine engineered for executive sedans and large hatchbacks (2008–2015). It combines dual VVT with sequential multi-point injection to deliver linear power delivery and refined high-speed cruising. Designed to meet Euro 5 standards, it balances performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,498 cc | |
Fuel type | Petrol | |
Configuration | 60° V6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 93.0 mm × 85.8 mm | |
Power output | 184 kW (250 PS) | |
Torque | 340 Nm @ 3,000 rpm | |
Fuel system | Sequential multi-point injection (Siemens MS 7.4) | |
Emissions standard | Euro 5 | |
Compression ratio | 10.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (front‑mounted, dual chains) | |
Oil type | Renault RN0700 (ACEA A3/B4, SAE 5W‑40) | |
Dry weight | 195 kg |
The Renault Z7W 706 was used across Renault's large executive platforms with longitudinal mounting. This engine received platform-specific adaptations—reinforced subframes in the Laguna GT and revised cooling ducts in the Latitude—and from 2013 the VVT solenoid update created minor interchange limits. All adaptations are documented in OEM technical bulletins.
The Z7W 706's primary reliability risk is VVT solenoid failure due to thermal seal degradation, with elevated incidence in sustained high-load or hot-climate usage. Renault internal field data from 2012 indicated a measurable uptick in cam timing faults before 100,000 km in fleet vehicles, while UK DVSA records show related misfire events in MOT-tested vehicles. Extended highway driving or towing amplifies heat exposure, making component upgrades and oil quality critical.
Analysis derived from Renault technical bulletins (2009–2015) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
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The Z7W 706 is generally robust when maintained properly, but early units (2008–2012) are prone to VVT solenoid issues. Post-2013 revisions improved reliability. Using correct RN0700 oil, quality petrol, and avoiding constant high-load operation significantly enhances longevity.
Top issues include VVT solenoid failure, IMRC actuator sticking, EGR valve coking, and rear main seal leaks. These are documented in Renault service bulletins RSB‑VVT‑2012‑04 and RSB‑FUEL‑2010‑07, especially in high-mileage or hot-climate vehicles.
The Z7W 706 powers the Laguna III, Latitude, and Vel Satis from 2008–2015, all in V6 250 form. It is exclusive to Renault and not shared with Nissan or Mercedes under this code. All meet Euro 5 emissions standards.
Yes—ECU remapping can safely yield +15–20 kW on stock hardware due to conservative factory calibration. Supporting upgrades (cold air intake, performance exhaust) enhance gains. Forced induction is not recommended without internal modifications.
Official NEDC combined is ~9.8 L/100km (~29 mpg UK). Real-world mixed driving typically achieves 10.5–12.0 L/100km (24–27 mpg UK), depending on model and driving style. Highway efficiency exceeds 8.0 L/100km.
Yes. The Z7W series is an interference design. Timing chain failure—though rare due to dual front-mounted chains—could cause piston-to-valve contact and catastrophic damage. No widespread chain issues reported.
Renault specifies RN0700-compliant 5W‑40 synthetic oil (ACEA A3/B4). This high-shear-stability formulation protects VVT components and timing chains. Change every 15,000 km or 12 months, whichever comes first.
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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