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—including the V6 250 variants—the Z7W 706 was engineered for drivers seeking effortless acceleration, low NVH levels, and responsive throttle response. Emissions compliance was achieved through precise fuel metering, exhaust gas recirculation (EGR), and a three-way catalytic converter, meeting Euro 5 standards throughout its production.
One documented concern is premature wear of the variable valve timing (VVT) phaser solenoids, highlighted in Renault Service Bulletin RSB‑VVT‑2012‑04. This issue stems from thermal degradation of solenoid seals under sustained high-load conditions, leading to erratic cam timing and misfire codes. Renault issued revised solenoid hardware with improved thermal resistance from Q1 2013.
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 naturally aspirated V6 provides smooth, linear power ideal for highway cruising but requires adherence to 15,000 km or 12-month oil change intervals using RN0700-spec oil to protect VVT solenoids and timing chains. The Siemens MS 7.4 ECU demands stable fuel pressure and clean injectors to maintain emissions compliance. EGR system clogging is common in urban driving, necessitating periodic cleaning. Post-2013 models include thermally upgraded VVT solenoids per RSB‑VVT‑2012‑04.
Oil Specs: Requires Renault RN0700 (5W‑40, ACEA A3/B4) specification (Renault SIB RSB‑LUBE‑2009‑12).
Emissions: Euro 5 certification applies to all 2008–2015 models (VCA Type Approval #VCA/EMS/6543).
Power Ratings: Measured under UN ECE R85 standards. Output verified on NEDC-compliant test cycles (Renault TIS Doc. M7W‑2110).
Renault Technical Information System (TIS): Docs M7W‑2100, M7W‑2101, M7W‑2102, RSB‑VVT‑2012‑04
VCA Type Approval Database (VCA/EMS/6543)
UNECE Regulation No. 85 (Engine Power Measurement)
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.
Locate the engine code stamped on the front timing cover near the harmonic balancer (Renault TIS M7W‑2150). The 7th VIN digit indicates engine family ('7' for Z7W series). All Z7W 706 units feature a silver aluminum valve cover with “V6 250” branding and lack turbo hardware. Critical differentiation from diesel V6 engines: Z7W uses a three-way catalytic converter only (no DPF/AdBlue) and has dual VVT actuators on camshaft ends. Service parts require production date verification—VVT solenoids before 03/2013 are incompatible with post-bulletin calibrations (Renault RSB‑VVT‑2012‑04).
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.
Find answers to most commonly asked questions about RENAULT Z7W-706.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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