The Renault Z7U 702 is a 3,498 cc, V6 naturally aspirated petrol engine produced between 2010 and 2015. It features dual overhead camshafts (DOHC), 24 valves, and sequential multi-point fuel injection. In standard form it delivers 184 kW (250 PS) and 330 Nm of torque, with smooth power delivery ideal for executive and performance applications.
Fitted to models such as the Laguna III GT and Latitude V6, including variants like the 3.5 V6, the Z7U 702 was engineered for refined high-speed cruising and responsive throttle response. Emissions compliance was achieved through precise fuel metering, variable valve timing (VVT) on intake camshafts, and a three-way catalytic converter, meeting Euro 5 standards from launch.
One documented concern is premature wear of the variable valve timing (VVT) actuator seals, highlighted in Renault Service Bulletin 15A003. This issue stems from thermal cycling stress on early-design elastomers. From mid‑2012, Renault implemented revised VVT actuators with improved heat-resistant seals to enhance reliability.
All production years 2010–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/3892).
The Renault Z7U 702 is a 3,498 cc V6 naturally aspirated petrol engine engineered for executive sedans and performance variants (2010–2015). It combines sequential multi-point injection with variable valve timing on the intake camshafts to deliver linear power and refined operation across the rev range. Designed to meet Euro 5, it balances performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,498 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 93.0 mm × 85.8 mm | |
| Power output | 184 kW (250 PS) | |
| Torque | 330 Nm @ 3,000 rpm | |
| Fuel system | Sequential multi-point injection (Siemens) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.6:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain (dual front‑mounted) | |
| Oil type | Renault RN0700 (SAE 5W‑40) | |
| Dry weight | 182 kg |
The Z7U 702 provides smooth, linear power ideal for highway cruising but requires strict adherence to 15,000 km oil change intervals to protect VVT actuators and timing chains. Renault RN0700 (5W-40) oil is critical due to its high-temperature stability and shear resistance. Frequent short trips accelerate VVT seal degradation due to condensation and thermal stress. Post-2012 models include updated VVT actuators per Renault SIB 15A003. The dual-chain timing system is robust but sensitive to oil quality—extended intervals risk chain stretch and guide wear.
Oil Specs: Requires Renault RN0700 (5W-40) specification (Renault SIB 15A003). Equivalent to ACEA A3/B4.
Emissions: Euro 5 certification applies to all 2010–2015 models (VCA Type Approval #VCA/EMS/3892).
Power Ratings: Measured under UN ECE R85 standards. Output validated on EN 228 unleaded petrol (Renault TIS M3498‑E).
Renault Technical Information System (TIS): Docs M3498-A, M3498-B, M3498-C, SIB 15A003
VCA Type Approval Database (VCA/EMS/3892)
UN Regulation No. 85 (Engine Power Measurement)
The Renault Z7U 702 was used across Renault's D platform with longitudinal mounting. This engine received platform-specific adaptations—reinforced engine mounts in the Laguna III GT and revised exhaust manifolds in the Latitude V6—and from 2012 the updated Laguna III Phase 2 adopted revised VVT actuators, creating limited interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left cylinder bank near the exhaust manifold flange (Renault TIS M3498-F). The 7th VIN digit indicates engine family ('U' for Z7U series). All Z7U 702 units feature silver valve covers and dual front timing covers. Critical differentiation from Z7U 700: Z7U 702 uses Siemens MSV80 ECU with OBD2 port under dash; Z7U 700 uses MSV70. VVT actuators changed after production date 06/2012—verify part numbers before replacement (Renault SIB 15A003).
The Z7U 702's primary reliability risk is VVT actuator seal degradation, with elevated incidence in frequent short-trip usage. Renault internal quality data from 2013 indicated a measurable uptick in VVT-related warranty claims before 90,000 km in urban fleets, while UK DVSA MOT records show catalytic converter efficiency as the second-most common petrol issue for this engine. Thermal cycling and oil contamination accelerate seal hardening, making oil quality and driving pattern critical.
Analysis derived from Renault technical bulletins (2011–2015) and UK DVSA failure statistics (2012–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT Z7U-702.
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
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)
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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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