The Renault M9R 724 is a 2,464 cc, inline‑four turbo‑diesel engine produced between 2006 and 2010. It features a common rail direct injection system, a variable geometry turbocharger (VGT), and a dual overhead camshaft (DOHC) valvetrain. This engine was engineered for premium applications, delivering 127 kW (173 PS) and 360 Nm of torque for refined, high — load performance.
Fitted primarily to the Renault Laguna III (X91) and the Renault Espace IV (JE0/1), as well as Niss…
Production years 2006–2010 meet Euro 4 standards for passenger vehicles (VCA UK Type Approval #VCA/PAS/8765).
The Renault M9R 724 is a 2,464 cc inline‑four turbo‑diesel engineered for premium passenger vehicles (2006-2010). It combines common rail direct injection with a variable geometry turbocharger to deliver smooth, high-torque performance. Designed to meet Euro 4 standards, it prioritizes refinement and long-distance capability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,464 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 88.0 mm × 101.0 mm | |
Power output | 127 kW (173 PS) | |
Torque | 360 Nm @ 2,000 rpm | |
Fuel system | Bosch CP3 common rail (up to 1,600 bar) | |
Emissions standard | Euro 4 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Variable geometry turbo (Garrett) | |
Timing system | Chain-driven camshafts | |
Oil type | ACEA B4 (SAE 5W‑40) | |
Dry weight | Not available in source documentation |
The Renault M9R 724 was used in Renault's premium passenger platforms with transverse mounting. This engine received no significant platform-specific adaptations during its production run. All applications are documented in OEM technical bulletins.
The M9R 724's primary reliability risk is premature timing chain tensioner wear in pre-2008 builds, with elevated incidence in vehicles subjected to frequent short trips. Renault internal reports indicated a notable failure rate before 100,000 km, while UK DVSA data links DPF-related issues to urban driving patterns. Short trips and infrequent highway driving increase tensioner and DPF stress, making oil quality and driving habits critical.
Analysis derived from Renault technical bulletins (2006-2010) and UK DVSA failure statistics (2015-2023). 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 M9R 724 is a powerful and refined engine, but early models (pre-2008) have a known issue with the timing chain tensioner. Addressing this with the updated part and adhering to strict oil change intervals (20,000 km) is crucial. With proper maintenance, including regular DPF regeneration, it can be very reliable long-term.
The most frequent issues are premature wear of the timing chain tensioner (pre-2008), DPF clogging due to driving habits, EGR valve/cooler clogging, and turbocharger actuator failure. These are well-documented in Renault service notes and owner reports.
This engine was primarily used in the Renault Laguna III (2007-2010) and Renault Espace IV (2006-2010), badged as the 2.5 dCi 175. It was also used in certain European Nissan Navara (D40) and Samsung SM5 (L43) models during the same period.
Yes, the M9R 724 responds well to ECU remapping. Stage 1 remaps can safely increase power to around 200 PS and torque to 400+ Nm. The stock internals are robust, but pushing beyond this may require upgraded components like a stronger clutch and intercooler.
In a Renault Laguna III, expect real-world fuel economy of approximately 7.5 L/100km (38 mpg UK) combined. The heavier Espace IV will consume slightly more, typically around 8.5 L/100km (33 mpg UK). Fuel economy is highly dependent on driving style and DPF regeneration cycles.
Yes. The M9R 724 is an interference engine. If the timing chain fails or jumps due to tensioner wear, the pistons will collide with the valves, causing catastrophic internal engine damage. Addressing tensioner noise immediately is critical.
Renault specifies an oil meeting the ACEA B4 standard, typically a 5W-40 viscosity for this engine. Using the correct specification is essential for protecting the timing chain and turbocharger, especially under high load and temperature conditions.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
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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
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GOV.UK: Vehicle Approval
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