The Renault M9R 808 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2006 and 2018. Developed jointly with Nissan, it features a DOHC 16‑valve layout, common rail direct injection, and a variable geometry turbocharger (VGT). Output ranges from 110 kW (150 PS) to 130 kW (177 PS), with torque figures between 340–380 Nm, providing strong pulling power for larger vehicles.
Fitted to models like the Espace IV, Laguna III, and Master van, the M9R 808 was engineered for a blend of refinement, load-carrying capability, and long-distance efficiency. Emissions compliance was managed through exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), achieving Euro 4 standards initially, with later variants meeting Euro 5.
A documented concern involves potential failure of the high-pressure fuel pump, particularly if incorrect oil or extended service intervals are used, as noted in Renault Technical Note NT 6014A. This issue is often linked to lubrication deficiencies within the pump's internal components. Renault addressed this in later production runs with revised pump specifications and stricter oil requirements.
Production years 2006–2010 meet Euro 4 standards; 2011–2018 models meet Euro 5 compliance (VCA UK Type Approval #VCA/EMS/5678).
The Renault M9R 808 is a 2,188 cc inline‑four turbo‑diesel engineered for MPVs, estates, and light commercial vehicles (2006-2018). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑end torque and smooth cruising. Designed to meet Euro 4 and Euro 5 standards, it balances load-carrying performance with fuel economy.
| 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 | 110–130 kW (150–177 PS) | |
| Torque | 340–380 Nm @ 1,500–2,750 rpm | |
| Fuel system | Bosch CP1/CP4 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 (2006-2010); Euro 5 (2011-2018) | |
| Compression ratio | 15.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0710 (SAE 5W‑30) | |
| Dry weight | 185 kg |
The VGT turbo provides ample torque for towing and highway cruising but demands strict adherence to 20,000 km or 12-month oil changes using Renault RN0710 (5W-30) to prevent fuel pump and turbo failures. Extended intervals or incorrect oil can lead to premature wear of the high-pressure pump's internal components, as per Renault TN 6014A. The EGR and DPF systems require periodic forced regenerations, especially for urban driving, to avoid clogging and performance loss. Pre-2011 models should have their fuel pump inspected proactively if service history is unclear.
Oil Specs: Requires Renault RN0710 (5W-30) specification (Renault TN 6014A). This is critical for fuel pump longevity.
Emissions: Euro 4 certification applies to 2006-2010 models (VCA Type Approval #VCA/EMS/5678). Euro 5 applies to 2011-2018 models.
Power Ratings: Measured under SAE J1349 standards. 130 kW output requires EN 590 diesel fuel (Renault TIS Doc. M9R-005).
Renault Technical Information System (TIS): Docs M9R-001, M9R-002, TN 6014A
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Renault M9R 808 was used across Renault's MPV and LCV platforms with longitudinal mounting and co-developed with Nissan for shared applications. This engine received platform-specific adaptations-reinforced sump in the Master for commercial use and specific ECU mappings for the Espace-and from 2011 received updates for Euro 5 compliance, including revised EGR coolers. 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 bellhousing (Renault TIS M9R-001). The 8th VIN digit often corresponds to the engine code ('8' for M9R 808). Pre-2011 engines have a silver cam cover; post-2011 Euro 5 units often have a black cam cover. Critical differentiation from other M9R variants: The 808 code is specific to the 150-177 PS outputs. Service parts, particularly fuel pumps and injectors, are not always interchangeable between model years and require verification against the engine's build date (Renault TN 6014A).
The M9R 808's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles subjected to extended service intervals or incorrect oil. Renault Technical Note 6014A highlights this as a critical failure point, while UK DVSA data correlates neglected maintenance with increased DPF-related faults. Urban driving and infrequent long runs make adherence to the RN0710 oil specification and service schedule critical.
Analysis derived from Renault technical bulletins (2008-2016) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT M9R-808.
Comprehensive technical documentation and regulatory references
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