The Renault M9R 816 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2007 and 2011. It features a double overhead camshaft (DOHC) layout, common rail direct injection, and a variable geometry turbocharger (VGT). This configuration delivers strong low-end torque for effortless everyday drivability, with outputs typically around 110 kW (150 PS) and 340 Nm.
Fitted to models such as the Laguna III and Espace IV, the M9R 816 was engineered for refined cruising and dependable performance. Emissions compliance for its production period was achieved through a diesel particulate filter (DPF) and exhaust gas recirculation (EGR), enabling adherence to Euro 4 standards, with some later variants meeting Euro 5 depending on the specific market configuration.
One documented concern involves potential failure of the high-pressure fuel pump, which can lead to a no-start condition. This issue, referenced in Renault Technical Note MEC 0078, is often associated with fuel contamination or inadequate lubrication. Renault subsequently issued revised pump components and updated fuel filtration recommendations for affected vehicles.
Production years 2007–2009 meet Euro 4 standards; 2010–2011 models may have Euro 5 compliance depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Renault M9R 816 is a 2,188 cc inline‑four turbo‑diesel engineered for mid‑size and large vehicles (2007-2011). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver strong low‑end torque and smooth highway performance. Designed to meet Euro 4 (and some market‑specific Euro 5) standards, it balances power with efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,188 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.3 mm × 89.0 mm | |
| Power output | 110 kW (150 PS) | |
| Torque | 340 Nm @ 2,000 rpm | |
| Fuel system | Bosch CP3 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 (pre‑2010); Euro 5 depending on market | |
| Compression ratio | 15.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain-driven | |
| Oil type | Renault RN0710 (SAE 5W‑30) | |
| Dry weight | 185 kg |
The VGT turbo provides strong, accessible torque ideal for highway merging and towing, but demands strict adherence to 15,000 km oil change intervals using RN0710 specification to protect the turbo and injectors. Ultra-low-sulfur diesel (ULSD) meeting EN 590 standards is mandatory to prevent high-pressure fuel pump failure, a known issue documented in Renault TN MEC 0078. Extended idling should be minimized. The DPF system requires regular highway driving cycles for passive regeneration; ignoring regeneration warnings can lead to expensive forced regeneration or filter replacement. EGR valve cleaning is recommended every 60,000 km to maintain performance.
Oil Specs: Requires Renault RN0710 (5W-30) specification (Renault Owner's Manual). Compatible with ACEA C3.
Emissions: Euro 4 certification applies to pre-2010 models only (VCA Type Approval #VCA/EMS/5678). Some 2010-2011 models meet Euro 5 depending on market.
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model range (Renault TIS Doc. M9R-003).
Renault Technical Information System (TIS): Docs M9R-001, M9R-002, M9R-003
Renault Technical Note: MEC 0078
VCA Type Approval Database (VCA/EMS/5678)
The Renault M9R 816 was used across Renault's Laguna III and Espace IV platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Espace for its heavier chassis-and no significant facelift revisions during its production run, ensuring broad parts interchangeability within the 2007-2011 model years. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a plate affixed to the timing cover or on the cylinder block near the gearbox flange (Renault TIS M9R-005). The 8th digit of the VIN typically corresponds to the engine code for Renault vehicles. Visually, the M9R features a black plastic cam cover with "dCi 16V" embossed on it. Critical differentiation from the higher-output M9R 866: The M9R 816 has a single intercooler pipe, while the 866 uses a twin-pipe setup. Service parts are generally compatible across 2007-2011 models, but fuel system components should be verified against the specific Technical Note MEC 0078 for the revised pump.
The M9R 816's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel. Renault Technical Note MEC 0078 documents this issue, while UK DVSA records show a correlation between DPF-related faults and urban driving patterns. Extended short trips and low-quality diesel make adherence to fuel and oil specifications critical.
Analysis derived from Renault technical bulletins (2008-2012) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT M9R-816.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with RENAULT or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
RENAULT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
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
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialRENAULT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
