The Renault M9R 859 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2016 and 2021. It features common‑rail direct injection, a variable geometry turbocharger (VGT), dual overhead camshafts (DOHC), and a wall‑flow diesel particulate filter (DPF). Power output is rated at 130 kW (177 PS) with peak torque of 380 Nm, delivered via a Bosch EDC17C74 engine control unit.
Fitted to models such as the Talisman, Mégane IV, and Koleos II, the M9R 859 was engineered for responsive performance and refined cruising, with strong low‑end torque for everyday drivability. Emissions compliance was achieved through cooled exhaust gas recirculation (EGR), a diesel oxidation catalyst (DOC), and a DPF, meeting Euro 6b and later Euro 6d‑TEMP standards across all markets.
One documented concern is premature wear of the high‑pressure fuel pump (HPFP) drive gear, highlighted in Renault Service Bulletin 6057C. This stems from marginal oil feed to the camshaft-mounted pump drive under frequent cold starts. From early 2018, Renault implemented a revised camshaft oil gallery and updated HPFP drive gear to mitigate the issue.
Production years 2016–2017 meet Euro 6b standards; 2018–2021 models comply with Euro 6d‑TEMP (VCA UK Type Approval #VCA/EMS/9012).
The Renault M9R 859 is a 2,188 cc inline‑four turbo‑diesel engineered for mid‑size and SUV platforms (2016–2021). It combines Bosch CP4.2 common‑rail injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and smooth highway performance. Designed to meet Euro 6b and Euro 6d‑TEMP emissions, it integrates advanced aftertreatment for compliance.
| 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 6b (2016–2017); Euro 6d‑TEMP (2018–2021) | |
| Compression ratio | 15.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0720 (SAE 5W‑30) | |
| Dry weight | 180 kg |
The M9R 859 delivers responsive performance with strong torque, ideal for both urban and motorway use, but requires strict adherence to 15,000 km oil change intervals using RN0720‑spec oil to protect the HPFP and timing chain. Ultra‑low‑sulfur diesel (EN 590) is mandatory to prevent CP4.2 pump seizure. Frequent short trips increase EGR and DPF soot loading, necessitating periodic regeneration. Post‑early‑2018 engines include an updated camshaft oil feed to the HPFP drive gear per Renault SIB 6057C.
Oil Specs: Requires Renault RN0720 (5W-30) specification (Renault SIB 6057C). Equivalent to ACEA C4 but with OEM-specific additives.
Emissions: Euro 6b certification applies to 2016–2017 models; Euro 6d‑TEMP applies to 2018–2021 models (VCA Type Approval #VCA/EMS/9012).
Power Ratings: Measured under SAE J1349 standards. 130 kW output requires EN 590 diesel with sulfur <10 ppm (Renault TIS Doc. R89015).
Renault Technical Information System (TIS): Docs R89010, R89105, SIB 6057C
VCA Type Approval Database (VCA/EMS/9012)
SAE International: J1349 Engine Power Certification Standards
The Renault M9R 859 was used across Renault's CMF‑CD platform with transverse mounting and shared with Nissan for European applications. This engine received platform-specific adaptations—reinforced engine mounts in the Koleos II and revised exhaust manifolding in the Talisman—and from 2018 the updated Mégane IV retained the same engine code but with refined ECU calibration for RDE compliance, creating minor software interchange limits. Partnerships allowed Nissan's dCi 180 units to leverage Renault's common-rail architecture. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crankshaft pulley (Renault TIS R89020). The 7th VIN digit indicates engine family ('9' for M9R 859). Pre-early-2018 units have a silver cam cover with a single oil feed to the HPFP; post-early-2018 models use a black cam cover with dual oil feeds. Critical differentiation from M9R 849: M9R 859 meets Euro 6d‑TEMP with updated ECU calibration and RDE-compliant EGR routing. Service parts require production date verification—fuel pump drive gears before 03/2018 are incompatible with later camshafts due to oiling redesign (Renault SIB 6057C).
The M9R 859's primary reliability risk is high-pressure fuel pump (HPFP) drive gear wear, with elevated incidence in short-trip urban use. Renault internal quality reports from 2019 indicated a notable share of pre-early-2018 engines requiring HPFP replacement before 100,000 km, while UK DVSA MOT data links DPF regeneration failures to frequent stop-start driving. Cold starts and infrequent oil changes accelerate wear, making oil spec and interval adherence critical.
Analysis derived from Renault technical bulletins (2016–2021) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT M9R-859.
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