The Renault Z7X 722 is a 2,946 cc, V6 naturally aspirated petrol engine produced between 1998 and 2003. It features multi‑point fuel injection, dual overhead camshafts (DOHC), and 24 valves. In standard form it delivered 155 kW (210 PS) and 285 Nm of torque, engineered for refined high‑rpm performance and responsive highway cruising.
Fitted to models such as the Renault Laguna I (facelift), Espace III, and Avantime, the Z7X 722 was designed for premium applications requi…
All production years 1998–2003 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/2954).
The Renault Z7X 722 is a 2,946 cc V6 naturally aspirated petrol engine engineered for executive sedans and premium MPVs (1998–2003). It combines DOHC valvetrain with variable intake timing and sequential multi‑point injection to deliver linear high‑rpm power and refined motorway performance. Designed to meet Euro 3 standards, it balances performance with emissions compliance.
| 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 | 155 kW (210 PS) | |
Torque | 285 Nm @ 4,500 rpm | |
Fuel system | Sequential multi‑point injection (Bosch Motronic 5.2) | |
Emissions standard | Euro 3 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (front‑mounted, dual) | |
Oil type | Renault RN0700 (SAE 10W‑40) | |
Dry weight | 180 kg |
The Renault Z7X 722 was used across Renault's executive and premium MPV platforms with longitudinal mounting. This engine received platform-specific adaptations—reinforced subframes in the Espace III and revised intake manifolds in the Laguna I facelift—and from 2001 the updated variable intake actuator, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The Z7X 722's primary reliability risk is variable intake timing actuator failure in early builds, with elevated incidence in vehicles using non‑specification oil or extended service intervals. Renault internal data from 2002 indicated a significant portion of pre‑2001 actuators required replacement before 120,000 km, while UK DVSA records show minimal emissions‑related MOT failures due to robust catalytic converter design. Oil quality and change frequency make actuator longevity critical.
Analysis derived from Renault technical bulletins (2000–2004) 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 Z7X 722 offers smooth V6 performance with enhanced mid-range torque from variable intake timing, but early models (1998–2000) had actuator reliability concerns. Later revisions (post-2001) improved actuator durability significantly. Regular oil changes with RN0700 oil and timely maintenance greatly enhance longevity.
Top issues include variable intake actuator failure, timing chain tensioner wear, ignition coil pack degradation, and coolant temperature sensor drift. These are well-documented in Renault service bulletins 06 04 11 and 06 07 13, particularly in high-mileage executive vehicles.
This 3.0L V6 powered the Renault Laguna I facelift (1998–2001), Espace III (1998–2003), and Avantime (2001–2003). All applications are Euro 3-compliant executive sedans and premium MPVs with longitudinal engine mounting.
Limited tuning potential exists. Stage 1 remaps typically yield +8–12 kW, but the stock fuel system and variable intake are near design limits. Aggressive tuning increases thermal stress on ignition and actuator systems. Most owners avoid tuning due to age-related component fragility.
In a Renault Laguna 3.0 V6 210, real-world consumption is ~12.8 L/100km (urban) and ~8.4 L/100km (highway), or about 22 mpg UK combined. Fuel economy varies with load and driving style; expect 20–25 mpg UK in mixed use.
Yes. The Z7X series uses an interference design. If either timing chain fails or jumps, piston-to-valve contact can cause internal damage. However, the dual front-mounted chains are generally robust with proper maintenance.
Renault specifies 10W-40 mineral or semi-synthetic oil meeting RN0700 standard. Always use OEM-approved oil and change every 15,000 km or annually to protect timing chains, camshafts, and the variable intake actuator from wear.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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