The Renault M9R 830 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2010 and 2018. It features a DOHC 16‑valve layout, common‑rail direct injection, and a variable geometry turbocharger (VGT). In standard form it delivered 130 kW (177 PS) and 380 Nm of torque, with strong low‑rpm pull for responsive daily driving.
Fitted to models such as the Laguna III, Latitude, and Espace IV—particularly the dCi 175 variants—the M9R 830 was engineered for smooth, refin…
All production years 2010–2018 meet Euro 5 standards .
The Renault M9R 830 is a 2,188 cc inline‑four turbo‑diesel engineered for executive and large MPV applications (2010–2018). It combines Bosch common‑rail injection with a single variable‑geometry turbocharger to deliver smooth, high-torque performance. Designed to meet Euro 5 emissions standards, it balances drivability with compliance and fuel efficiency.
| 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 | 130 kW (177 PS) | |
Torque | 380 Nm @ 2,000 rpm | |
Fuel system | Bosch CP4.2 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 15.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett) | |
Timing system | Chain (front‑mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 185 kg |
The Renault M9R 830 was used across Renault's Laguna III, Espace IV, and Latitude platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced engine mounts in the Espace and revised cooling ducts in the Laguna—and from 2014 the DMF upgrade improved driveline compatibility, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 830 offers strong performance and refinement, but pre-2014 models are prone to dual-mass flywheel failure, especially with urban driving. Post-2014 revisions improved DMF durability. Regular oil changes with RN0700/ACEA C3 oil and avoiding short trips greatly enhance longevity.
Top issues include dual-mass flywheel wear, CP4.2 high-pressure fuel pump failure, DPF clogging from short trips, and EGR cooler leaks. These are documented in Renault service bulletins NTM‑09‑2013 and NTM‑07‑2012, with clear OEM repair paths.
The M9R 830 powered the Laguna III (2010–2015), Espace IV (2010–2015), Latitude (2010–2015), and European Nissan Murano (2011–2014), all as the dCi 175 variant. It was not used in smaller models like Megane or Scénic.
Aftermarket ECU tuning is common on the M9R-830 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
In a Laguna dCi 175, expect ~6.5 L/100km (city) and ~4.8 L/100km (highway), or about 47 mpg UK combined. Real-world mixed driving typically returns 42–50 mpg (UK), depending on driving style and DPF regeneration frequency.
Yes. The M9R series is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. However, the front-mounted chain is generally reliable with proper maintenance.
Renault specifies SAE 5W‑30 oil meeting RN0700 or ACEA C3 standards. Using non-approved oil risks CP4.2 pump failure and increased soot buildup. Change every 20,000 km or annually, whichever comes first.
Comprehensive technical documentation and regulatory references
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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
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.
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