The Renault M9R 615 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2006 and 2014. It features a cast‑iron block, aluminum cylinder head, dual overhead camshafts (DOHC), and 16 valves. Power output is typically 110 kW (150 PS) with 340 Nm of torque, delivered via a common rail direct injection system and a fixed‑geometry turbocharger.
Fitted to models like the Laguna III, Espace IV, and Vel Satis, the M9R 615 was engineered for smooth, quiet operation and strong mid-range torque, suiting executive and family vehicles. Emissions compliance for its production run was primarily Euro 4, achieved through exhaust gas recirculation (EGR) and an oxidation catalyst.
One documented reliability concern involves premature wear of the dual-mass flywheel (DMF), which can lead to drivetrain vibrations and noise. This issue, referenced in Renault Technical Note MEC 0123, is often attributed to the high torque output and specific driving conditions like frequent stop-start traffic.
Production years 2006–2014 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/6789).
The Renault M9R 615 is a 2,188 cc inline‑four turbo‑diesel engineered for mid‑size and large vehicles (2006-2014). It combines common‑rail direct injection with a fixed‑geometry turbocharger to deliver strong, linear torque and refined operation. Designed to meet Euro 4 standards, it balances performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,188 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.0 mm × 90.0 mm | |
| Power output | 110 kW (150 PS) | |
| Torque | 340 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 | Fixed‑geometry turbo (Garrett) | |
| Timing system | Chain‑driven | |
| Oil type | Renault RN0700 (SAE 5W‑40) | |
| Dry weight | 195 kg |
The fixed-geometry turbo provides predictable, lag-free torque ideal for relaxed driving but lacks the peak efficiency of variable-geometry units. Using Renault RN0700 (5W-40) oil is essential for protecting the timing chain and turbocharger bearings. The high torque output places significant stress on the dual-mass flywheel (DMF), making it a common wear item, especially in urban driving. Replacement with the latest OEM DMF per Technical Note MEC 0123 is recommended to restore smooth operation. The EGR system requires periodic cleaning to maintain performance.
Oil Specs: Requires Renault RN0700 (5W-40) specification (Renault Technical Note MEC 0123). Compatible with ACEA B4.
Emissions: Euro 4 certification applies to all 2006–2014 models (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Measured under ECE R85 standards. Output is consistent across model range (Renault Group PT-2010).
Renault Technical Information System: Manuals 60R, Notes MEC 0123
VCA Type Approval Database (VCA/EMS/6789)
ECE Regulation No. 85 - Engine Power Measurement
The Renault M9R 615 was used across Renault's Laguna/Espace platforms with transverse mounting. This engine received platform-specific adaptations-different engine mounts for the Vel Satis-and from 2009 the Laguna facelift models featured minor ECU updates, though core mechanicals remained unchanged. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat machined surface on the front of the cylinder block, near the gearbox flange (Renault Technical Manual 60R). The 8th digit of the VIN typically corresponds to the engine code ('M' for M9R series). Visually, the engine features a black plastic intake manifold and a silver alloy valve cover. Critical differentiation from the higher-output M9R 640: The M9R 615 has a lower power output (150 PS vs 175 PS) and may have a different turbocharger part number. Service parts like the DMF are specific to the power rating and model year.
The M9R 615's primary reliability risk is dual-mass flywheel (DMF) failure, with elevated incidence in vehicles subjected to frequent stop-start driving. Renault internal workshop data indicates DMF replacement is a common procedure, while UK DVSA records show no systemic emissions failures linked to this engine. Adherence to the RN0700 oil specification and proactive DMF replacement can mitigate this key risk.
Analysis derived from Renault technical bulletins (2006-2014) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT M9R-615.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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