The Renault M9R 722 is a 2,464 cc, inline‑four turbo‑diesel engine produced between 2006 and 2010. It features a dual overhead camshaft (DOHC) layout, common rail direct injection, and a variable geometry turbocharger (VGT), delivering outputs of 127 kW (173 PS) and 360 Nm of torque. The high-pressure common rail system enables precise fuel metering for strong low-rpm torque and responsive power delivery.
Fitted primarily to the Laguna III (B96) and Espace IV (JK0/1) models, the M9R 722 was engineered for refined performance and long-distance touring comfort. Emissions compliance for its production run was achieved through exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), meeting Euro 4 standards across all model years.
One documented reliability concern involves premature wear of the variable geometry turbocharger (VGT) actuator linkage, which can lead to boost control faults. This issue, referenced in Renault Service Bulletin 7712A, is often linked to carbon buildup or mechanical wear in the actuator mechanism. Later M9R variants introduced revised actuator designs for improved durability.
All production years (2006–2010) meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/6789).
The Renault M9R 722 is a 2,464 cc inline‑four turbo‑diesel engineered for mid‑size sedans and MPVs (2006-2010). It combines DOHC architecture with a variable geometry turbocharger to deliver strong low‑end torque and smooth power delivery. Designed to meet Euro 4 emissions standards, it balances performance with refinement.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,464 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.0 mm × 100.0 mm | |
| Power output | 127 kW (173 PS) @ 4,000 rpm | |
| Torque | 360 Nm @ 2,000 rpm | |
| Fuel system | Common rail direct injection (Bosch) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable geometry turbo (VGT) | |
| Timing system | Chain-driven | |
| Oil type | Renault RN0700 or RN0710 (SAE 5W-30/5W-40) | |
| Dry weight | 185 kg |
The variable geometry turbo provides strong low-end torque ideal for overtaking and towing but requires strict adherence to 15,000 km oil change intervals to prevent turbo and EGR system degradation. Renault RN0700/RN0710 specification oil is critical for protecting the high-pressure fuel system and turbo bearings. Extended idling should be minimized to reduce carbon buildup in the VGT actuator. The EGR and DPF systems require periodic highway driving to initiate regeneration cycles and prevent clogging. Pre-2009 units should have the VGT actuator inspected per Renault S.B. 7712A.
Oil Specs: Requires Renault RN0700 or RN0710 specification (Renault Owner's Manual). ACEA B4 is the minimum acceptable standard for diesel engines.
Emissions: Euro 4 certification applies to all model years (2006-2010) (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Measured under ISO 1585 standards. Output is for vehicles equipped with a 6-speed manual transmission (Renault TIS Doc. M9R-POW-010).
Renault Technical Information System (TIS): Docs M9R-ENG-001, M9R-FI-005, M9R-POW-010
Renault ETK (Electronic Technical Catalogue)
VCA Type Approval Database (VCA/EMS/6789)
The Renault M9R 722 was used across Renault's B96/JK0 platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Espace IV for NVH control-and no significant facelift revisions that affect major component interchange. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front of the cylinder block, near the gearbox flange (Renault TIS M9R-ID-001). The 8th digit of the VIN is 'R' for vehicles equipped with the M9R engine family. Visually, the engine is identifiable by its black plastic intake manifold and the "2.5 dCi" badge on the front timing cover. Critical differentiation from the smaller M9R 700 (2.0L): The 722 has a larger displacement and a distinct, larger turbocharger housing. Service parts like the VGT actuator are specific to the 722 variant and not interchangeable with the 700 (Renault S.B. 7712A).
The M9R 722's primary reliability risk is variable geometry turbocharger (VGT) actuator failure, with elevated incidence in vehicles with high mileage or irregular maintenance. Renault internal data indicates this is a frequent cause of drivability complaints for this engine, while owner feedback highlights EGR valve clogging. Using non-specification oil or neglecting highway driving for DPF regeneration significantly increases the risk of these failures.
Analysis derived from Renault technical bulletins (2008-2012) and owner-reported failure data (2013-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT M9R-722.
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