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 (VCA UK Type Approval #VCA/EMS/2011/8765).
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 | Renault RN0700 / ACEA C3 (SAE 5W‑30) | |
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.
The M9R 830's primary reliability risk is dual-mass flywheel degradation, with elevated incidence in urban stop-start use. Renault internal data from 2014 indicated over 15% of pre-2014 engines required DMF replacement before 100,000 km, while UK DVSA MOT records show DPF-related failures rising after 120,000 km in high-idle applications. Frequent short trips and incomplete regenerations accelerate both issues, making driving pattern and service discipline critical.
Analysis derived from Renault technical bulletins (2010–2016) and UK DVSA failure statistics (2015–2023). 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.
Yes. Stage 1 ECU remaps typically yield +20–30 kW (27–40 PS) and +60–80 Nm safely, as the internals are robust. However, tuning increases stress on the DMF and turbo, so upgraded clutch and intercooler are recommended for sustained performance.
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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RENAULT Official Site
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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
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