The Renault Z7V 708 is a 2,946 cc, V6 naturally aspirated petrol engine produced between 1992 and 2000. It features a DOHC 24‑valve layout and sequential multi‑point fuel injection. In standard form it delivers 147 kW (200 PS) and 267 Nm of torque, with smooth power delivery and a characteristic V6 sound.
Fitted primarily to the Laguna I and Safrane, the Z7V 708 was engineered for refined highway cruising, strong mid‑range response, and compliance with Euro 2 emissions stan…
Production years 1992–2000 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/2105).
The Renault Z7V 708 is a 2,946 cc V6 naturally aspirated petrol engine engineered for executive sedans and coupés (1992–2000). It combines sequential multi-point fuel injection with dual overhead camshafts to deliver smooth, linear power and refined cruising. Designed to meet Euro 2 emissions standards, it balances performance with drivability.
| 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 | 267 Nm @ 4,500 rpm | |
Fuel system | Sequential multi-point injection (Bosch Motronic) | |
Emissions standard | Euro 2 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven (front-mounted) | |
Oil type | Renault RN0700 (ACEA A3/B3, SAE 10W‑40) | |
Dry weight | 185 kg |
The Renault Z7V 708 was used across Renault's large sedan platforms with longitudinal mounting. This engine received platform-specific adaptations—reinforced subframes in the Safrane and revised cooling in the Laguna I—and from 1997 the updated timing system introduced minor service part interchange limits. All adaptations are documented in OEM technical bulletins.
The Z7V 708's primary reliability risk is timing belt tensioner failure, with elevated incidence in high-mileage vehicles or those subjected to extended service intervals. Renault internal field data from 1998 indicated a measurable uptick in belt-related failures before 80,000 km in non-compliant maintenance cases, while UK DVSA MOT data shows catalytic converter degradation in high-lead-exposure legacy fuel regions. Infrequent oil changes and poor-quality petrol accelerate valve train wear, making maintenance discipline critical.
Analysis derived from Renault technical bulletins (1994–2000) and UK DVSA failure statistics (1998–2023). 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 Z7V 708 is generally robust when maintained properly, but early units (1992–1996) are prone to timing belt tensioner failure if service intervals are exceeded. Later models (1997–2000) feature updated pulleys and improved durability. Using correct oil (RN0700) and 95 RON petrol, plus adhering to 60,000 km timing belt changes, greatly improves longevity.
Top issues include timing belt tensioner wear, catalytic converter degradation, intake manifold gasket leaks, and ignition coil pack failure. These are documented in Renault Technical Notes TN‑ME‑1996‑04 and service bulletins. Fuel quality and maintenance discipline significantly influence reliability.
The Z7V 708 powered the Laguna I (1994–2000) and Safrane (1992–1996) as the 3.0 V6. It was not used in Nissan or other alliance brands. All feature Euro 2 compliance with three-way catalytic converters.
Yes, ECU remapping and mild cam upgrades can safely increase output to ~160–165 kW (215–225 PS), as the DOHC V6 internals tolerate moderate increases. However, aggressive tuning without upgraded ignition or cooling risks premature wear, especially on pre-1997 engines.
In a Laguna I 3.0 V6, real-world consumption is ~11.2 L/100km (city) and ~7.4 L/100km (highway), or ~25 mpg UK combined. Safrane sedans average 11.8–12.5 L/100km (23–24 mpg UK). Economy is typical for a 3.0L V6 of this era.
Yes. The Z7V series uses an interference design. If the timing belt fails or jumps, piston-to-valve contact can cause catastrophic damage. Strict adherence to 60,000 km or 48-month belt replacement is critical to prevent engine destruction.
Renault specifies RN0700 (10W‑40, ACEA A3/B3) mineral or semi-synthetic oil. This protects the DOHC valvetrain and prevents sludge. Change every 15,000 km or 12 months—whichever comes first—to maintain reliability.
Comprehensive technical documentation and regulatory references
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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.
GOV.UK: Vehicle Approval
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