The Renault Z7W 700 is a 2,946 cc, V6 naturally aspirated petrol engine produced between 1995 and 2001. It features an aluminium block and head, dual overhead camshafts (DOHC), and 24 valves. In standard form it delivered 147 kW (200 PS) and 285 Nm of torque, offering smooth power delivery and refined performance for executive applications.
Fitted to models such as the Laguna I (A56), Safrane II (B54), and Espace II (J63), the Z7W 700 was engineered for quiet operation, high —…
All production years (1995–2001) meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/2891).
The Renault Z7W 700 is a 2,946 cc V6 naturally aspirated petrol engine engineered for executive sedans and MPVs (1995–2001). It combines DOHC 24‑valve architecture with sequential fuel injection to deliver smooth, linear power and refined cruising. Designed to meet Euro 2 standards, it prioritizes drivability and acoustic comfort over peak efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,946 cc | |
Fuel type | Petrol | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 87.0 mm × 82.6 mm | |
Power output | 147 kW (200 PS) | |
Torque | 285 Nm @ 4,500 rpm | |
Fuel system | Sequential multi‑point injection (Bosch Motronic ME7.1) | |
Emissions standard | Euro 2 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (front‑mounted, dual) | |
Oil type | ACEA A3/B3 (SAE 10W‑40) | |
Dry weight | 178 kg |
The Renault Z7W 700 was used across Renault's A56/B54/J63 platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced engine mounts in the Espace and revised cooling ducting in the Safrane—and from 1998 the Laguna I Phase 2 adopted an updated inlet manifold, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The Z7W 700's primary reliability risk is plastic inlet manifold failure in early production units, with elevated incidence in high‑mileage or thermally stressed applications. Renault internal service data (1999) indicated manifold replacements in over 12% of pre‑1998 engines before 140,000 km, while UK DVSA records show misfire-related MOT failures linked to vacuum leaks. Extended idling and aggressive driving accelerate thermal fatigue, making visual inspection and timely replacement critical.
Analysis derived from Renault technical bulletins (1995–2001) and UK DVSA failure statistics (2010–2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The Z7W 700 is a refined and smooth V6 but has known weaknesses in its early plastic inlet manifold. Post-1998 revisions significantly improved durability. With regular oil changes, ignition maintenance, and manifold inspection, many engines exceed 250,000 km. Avoid aggressive driving and ensure proper cooling system upkeep to maximize longevity.
Top issues include plastic inlet manifold cracking (pre-1998), ignition coil pack failures, valve cover oil leaks, and thermostat sticking. These are well-documented in Renault Technical Note 77 13 05 00 P and TIS service procedures. The manifold issue is the most critical and should be addressed proactively.
The Z7W 700 powered the Laguna I (1995–2001), Safrane II (1996–2000), and Espace II (1996–2000), all as 3.0-litre V6 variants. It was not used in Clio, Mégane, or Scénic. No cross-manufacturer licensing occurred; this engine was exclusive to Renault Group vehicles.
Limited tuning potential exists due to the naturally aspirated architecture. Power gains typically require induction, exhaust, and ECU remapping, yielding modest increases (~10–15 kW). Forced induction is not commonly supported due to space and fuel system constraints. Most owners retain stock configuration for reliability and refinement.
In a Laguna I 3.0 V6, expect ~12.5 L/100km (city) and ~8.2 L/100km (highway), or about 23 mpg UK combined. Real-world economy is heavily dependent on driving style, with highway cruising offering the best efficiency. High fuel consumption is typical for a 3.0L V6 of this era.
Yes. The Z7W series is an interference engine. If either timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. However, the dual front-mounted chains are generally robust with proper oil maintenance and rarely fail if serviced correctly.
Renault specifies ACEA A3/B3 10W-40 petrol engine oil. Do not use diesel-specific, C3, or Longlife oils. Change every 15,000 km or annually. Correct oil is vital for timing chain, camshaft, and high-RPM valve train longevity, especially under load or in hot climates.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with RENAULT or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
RENAULT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialRENAULT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.