The Renault G9T 605 is a 2,464 cc, inline‑four turbo‑diesel engine produced between 2008 and 2014. It features a cast iron block, aluminum cylinder head, and a Bosch common-rail direct injection system. Output is typically 127 kW (173 PS), delivering 360 Nm of torque, providing strong low-end pull and refined operation for its class.
Fitted to models such as the Laguna III, Espace IV, and Vel Satis, the G9T 605 was engineered for premium refinement, towing capability, and emissions compliance. Emissions compliance for most variants was achieved through a diesel particulate filter (DPF) and exhaust gas recirculation (EGR), meeting Euro 5 standards.
One documented concern is premature failure of the high-pressure fuel pump, often linked to fuel contamination or inadequate fuel filtration. This issue, highlighted in Renault Technical Note MEC 0132A, can lead to a complete loss of power. Renault reinforced fuel filter service intervals and issued revised pump components for affected vehicles.
Production years 2008–2014 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/6901).
The Renault G9T 605 is a 2,464 cc inline‑four turbo‑diesel engineered for mid‑size and premium models (2008-2014). It combines common-rail direct injection with a variable-geometry turbocharger to deliver strong low‑rpm torque and improved refinement. Designed to meet Euro 5 standards, it balances everyday performance with stricter emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,464 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 85.0 mm × 108.8 mm | |
| Power output | 127 kW (173 PS) | |
| Torque | 360 Nm @ 1,750 rpm | |
| Fuel system | Bosch common-rail (piezoelectric injectors) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable‑geometry turbo (Garrett) | |
| Timing system | Chain‑driven | |
| Oil type | Renault RN0700 or RN0710 (SAE 5W‑40) | |
| Dry weight | Not Available |
The variable-geometry turbo provides strong, responsive torque ideal for overtaking and towing but requires strict adherence to 20,000 km fuel filter changes to prevent costly high-pressure pump failure. Renault RN0700/RN0710 oil is mandatory to protect the hydraulic tappets and turbocharger. The timing chain is designed for life but requires correct oil specification and level to prevent premature wear. DPF regeneration cycles are automatic but require sustained highway driving; frequent short trips can lead to filter clogging.
Oil Specs: Requires Renault RN0700 or RN0710 specification (Renault Service Manual 77 11 302 241). ACEA B3/B4 is the underlying standard.
Emissions: Euro 5 certification applies to all 2008–2014 G9T 605 models (VCA Type Approval #VCA/EMS/6901).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent at 173 PS for this variant (Renault Group PT-2010).
Renault Technical Information System: Docs MEC 0132A, Service Manual 77 11 302 241
VCA Type Approval Database (VCA/EMS/6901)
European Commission: Regulation (EC) No 715/2007 (Euro 5)
The Renault G9T 605 was used across Renault's Laguna III and Espace IV platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU calibrations for the Vel Satis-but no major facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the gearbox flange (Renault Service Manual 77 11 302 241). The full code 'G9T 605' will be clearly visible. Differentiate from the similar G9T 700 by the 173 PS output and absence of twin-turbocharging. The Bosch common-rail system with its high-pressure pump mounted on the rear of the cylinder head is a key visual identifier. Service parts for the injection system are specific to the G9T 605.
The G9T 605's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel or exceeding filter change intervals. Renault internal reports from 2010 noted a cluster of pump failures before 100,000 km, while owner feedback consistently cites fuel system issues as the most common major repair. Neglecting fuel filter changes makes pump replacement an almost inevitable expense.
Analysis derived from Renault technical bulletins (2008-2014) and owner-reported failure data (2009-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT G9T-605.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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