The Renault M9R 856 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2016 and 2020. It features a DOHC 16‑valve layout, Bosch common‑rail direct injection, and a variable geometry turbocharger (VGT). In standard form it delivered 170 kW (230 PS) and 480 Nm of torque, with high mid‑range responsiveness suited to performance‑oriented SUV and executive applications.
Fitted to models such as the Talisman GT, Espace V Initiale Paris, and Koleos II—specifica…
All production years 2016–2020 meet Euro 6b or Euro 6d-TEMP standards depending on registration date .
The Renault M9R 856 is a 2,188 cc inline‑four turbo‑diesel engineered for premium SUVs and executive sedans (2016–2020). It combines Bosch CP4.2 common‑rail injection with a single variable‑geometry turbocharger to deliver high torque and responsive performance. Designed to meet Euro 6b and Euro 6d-TEMP emissions standards, it integrates SCR/AdBlue technology for NOx control while maintaining drivability.
| 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 | 170 kW (230 PS) | |
Torque | 480 Nm @ 2,000 rpm | |
Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
Emissions standard | Euro 6b (2016–2017); Euro 6d-TEMP (2018–2020) | |
Compression ratio | 15.3:1 | |
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 | 190 kg |
The Renault M9R 856 was used across Renault's Talisman, Espace V, and Koleos II platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced transmission mounts in the Talisman GT and revised exhaust routing in the Koleos—and from mid‑2018 the HPFP/cam follower upgrade improved durability, 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 856 offers strong performance and refinement, but pre-mid‑2018 models are prone to HPFP cam follower wear if oil changes are neglected or incorrect oil is used. Post-mid‑2018 revisions improved HPFP durability. Using RN0720/ACEA C5 oil and avoiding aggressive short-trip driving greatly enhance longevity.
Top issues include HPFP cam follower wear, SCR/AdBlue system faults, DPF ash clogging, and VGT turbo actuator seizure. These are documented in Renault service bulletins NTM‑14‑2017 and NTM‑09‑2018, with clear OEM repair paths.
The M9R 856 powered the Talisman (2016–2020), Espace V Initiale Paris (2016–2020), and Koleos II (2016–2020), all as the dCi 230 variant. It was not used in smaller models like Megane or Scénic, nor in Nissan applications.
Aftermarket ECU tuning is common on the M9R-856 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 Talisman dCi 230, expect ~7.2 L/100km (city) and ~5.4 L/100km (highway), or about 42 mpg UK combined. Real-world mixed driving typically returns 38–45 mpg (UK), depending on driving style, DPF regeneration frequency, and AdBlue system status.
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 0W‑30 oil meeting RN0720 or ACEA C5 standards. Using non-approved oil risks HPFP failure and increased LSPI (low-speed pre-ignition) potential. Change every 15,000 km or annually, whichever comes first.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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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.
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