The Renault Z7X 755 is a 3,498 cc, 60° V6 naturally aspirated petrol engine produced between 2010 and 2018. It features sequential multi-point fuel injection, dual overhead camshafts (DOHC) per bank, and variable valve timing on both intake and exhaust camshafts. In standard form it delivers 177 kW (241 PS) and 330 Nm of torque, with a redline of 6,750 rpm.
Fitted to premium models such as the Laguna III, Latitude, and Talisman, including the Initiale Paris and GT trims, the Z7X 755 was engineered for smooth, linear power delivery and refined high-speed cruising. Emissions compliance was achieved through precise fuel metering, twin catalytic converters, and dual VVT systems, enabling Euro 5 compliance across all production years.
One documented concern is premature wear of the dual variable valve timing (VVT) actuators, highlighted in Renault Service Bulletin 6023D. This issue stems from oil flow restrictions and solenoid contamination under extended service intervals or incorrect oil viscosity. From 2014, Renault introduced revised actuator internals and updated oil gallery designs to mitigate premature failure.
All production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/7553).
The Renault Z7X 755 is a 3,498 cc V6 naturally aspirated petrol engine engineered for executive sedans and large MPVs (2010–2018). It combines sequential multi-point injection with dual variable cam timing to deliver smooth, linear power and refined high-rpm operation. Designed to meet Euro 5 standards, it balances performance with emissions 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 × 85.5 mm | |
| Power output | 177 kW (241 PS) | |
| Torque | 330 Nm @ 3,750 rpm | |
| Fuel system | Sequential multi-point injection (Bosch ME17.4.6) | |
| 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 (SAE 5W‑40) | |
| Dry weight | 189 kg |
The naturally aspirated V6 provides smooth, linear power ideal for motorway cruising but requires strict adherence to 15,000 km oil change intervals using Renault RN0700 (5W-40) to prevent dual VVT actuator clogging and chain wear. Extended service intervals or incorrect oil viscosity reduce oil pressure to the VVT solenoids, causing timing errors and rough running. Post-2014 models feature revised oil galleries and actuator internals per Renault SIB 6023D; pre-2014 units benefit from solenoid inspection and oil system flush during major services.
Oil Specs: Requires Renault RN0700 (5W-40) specification (Renault SIB 6023D). Equivalent to ACEA A3/B4 but with OEM-specific additives.
Emissions: Euro 5 certification applies to all 2010–2018 models (VCA Type Approval #VCA/EMS/7553).
Power Ratings: Measured under SAE J1349 standards. Output verified with 95 RON fuel (Renault TIS Doc. Z7X‑3498).
Renault Technical Information System (TIS): Docs Z7X‑3498, SIB 6023D
VCA Type Approval Database (VCA/EMS/7553)
SAE International: J1349 Engine Power Certification Standards
The Renault Z7X 755 was used across Renault's Laguna III/Talisman platforms with longitudinal mounting and shared with Nissan for select FM platform applications. This engine received platform-specific adaptations—reinforced mounts in the Latitude and revised intake manifolds in the Talisman—and from 2014 the facelifted Laguna III Phase 2 and early Talisman adopted updated dual VVT actuators and oil galleries, creating interchange limits. Partnerships allowed Nissan's 350 GT to share core architecture. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left cylinder bank near the exhaust manifold (Renault TIS Z7X‑3498). The 7th VIN digit indicates engine family ('X' for Z7X series). Pre-2014 models use dual VVT actuators with black solenoid bodies; post-2014 units have grey bodies and updated oil galleries. Critical differentiation from earlier V6 petrol engines: Z7X 755 features dual VVT (intake and exhaust), whereas Z7W 707 has intake-only VVT. VVT actuators and oil pumps must match production date—pre-2014 components are incompatible with post-2014 calibration due to oil pressure strategy changes (Renault SIB 6023D).
The Z7X 755's primary reliability risk is dual variable valve timing (VVT) actuator failure on early builds, with elevated incidence in vehicles using extended service intervals or incorrect oil viscosity. Renault internal data from 2015 indicated a notable share of pre-2014 engines requiring VVT replacement before 120,000 km, while UK DVSA records show occasional emissions-related MOT failures linked to catalyst degradation in high-mileage examples. Poor oil maintenance accelerates solenoid clogging and timing errors, making oil quality and service adherence critical.
Analysis derived from Renault technical bulletins (2012–2016) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT Z7X-755.
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