The Renault R9M 404 is a 1,749 cc, inline‑four turbo‑diesel engine produced between 2018 and 2024. Developed under the Renault–Nissan–Mitsubishi Alliance, it features a common‑rail fuel system, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivered 96 kW (130 PS), with torque peaking at 300 Nm for responsive urban and highway performance.
Fitted to models such as the Clio V, Captur II, and Arkana—including the Blue dCi 130 variants—the R9M 404 was engineered for compact platforms requiring Euro 6d compliance. Emissions control was achieved through exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, enabling full compliance with WLTP and RDE standards.
One documented concern is AdBlue system crystallisation during prolonged vehicle inactivity, highlighted in Renault Service Information Bulletin NTM 12‑054. This issue stems from urea deposit formation in the dosing injector and lines when non-compliant fluid is used or the vehicle is parked for extended periods. From 2020, revised injector materials and fluid guidance were reinforced to improve system robustness.
Production years 2018–2024 meet Euro 6d standards across all markets (VCA UK Type Approval #VCA/EMS/5678).
The Renault R9M 404 is a 1,749 cc inline‑four turbo‑diesel engineered for compact passenger vehicles (2018–2024). It combines Bosch CP4.2 common‑rail injection with a single variable‑geometry turbocharger to deliver smooth torque and refined efficiency. Designed to meet Euro 6d emissions from launch, it integrates SCR/AdBlue technology alongside EGR and DPF systems.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,749 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 78.0 mm × 91.4 mm | |
| Power output | 96 kW (130 PS) | |
| Torque | 300 Nm @ 1,750–2,500 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 15.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0720 (ACEA C3, SAE 5W‑30) | |
| Dry weight | 145 kg |
The R9M 404 delivers smooth, linear torque ideal for city and motorway driving but requires strict adherence to 20,000 km oil change intervals to protect the CP4.2 fuel pump and timing chain. Renault RN0720 (5W-30) oil is essential due to its low-SAPS formulation, which safeguards the DPF, SCR catalyst, and turbocharger. Use only ISO 22241-compliant AdBlue and EN 590 diesel to prevent injector crystallisation and fuel pump wear. Extended vehicle inactivity (>14 days) accelerates AdBlue deposit formation; regular operation (≥20 minutes weekly) is recommended per Renault NTM 12‑054.
Oil Specs: Requires Renault RN0720 (5W-30) specification (Renault SIB NTM 12‑054). Equivalent to ACEA C3 but with OEM-specific additive limits.
Emissions: Euro 6d certification applies to all 2018–2024 R9M 404 engines (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ISO 1585 standards. 96 kW output requires EN 590-compliant diesel with minimum lubricity (Renault TIS Doc. R9M‑010).
Renault Technical Information System (TIS): Docs R9M‑001, R9M‑002, R9M‑005, NTM 12‑054
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585: Road vehicles — Engine test code
The Renault R9M 404 was used across Renault's Clio V, Captur II, and Arkana platforms with transverse mounting and shared with Nissan for select compact applications. This engine received platform-specific adaptations—revised engine mounts in the Captur and enhanced thermal shielding in the Arkana—and from 2021 the introduction of updated AdBlue control modules created minor interchange limits. Partnerships enabled Nissan's dCi 130 variant in the Juke (F16). All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left-side engine block near the cylinder head (Renault TIS R9M‑003). The 7th VIN digit indicates engine family ('9' for R9M series). All R9M 404 units feature black cam covers and Continental EMS3125 ECU with AdBlue dosing module. Critical differentiation from R9M 406: R9M 404 is exclusively the 130 PS variant with lower boost pressure and specific injector calibration. Service parts require production date verification—AdBlue injectors for engines before 06/2020 use different thermal shielding per Renault NTM 12‑054.
The R9M 404's primary reliability risk is AdBlue system crystallisation, with elevated incidence in vehicles parked for extended periods or using non-certified fluid. Renault field reports from 2021 noted a significant share of Blue dCi 130 vehicles requiring AdBlue injector replacement before 60,000 km in low-usage scenarios, while UK DVSA MOT data links NOx-related emissions failures to fluid quality and inactivity in Euro 6d diesels. Infrequent use and neglect of AdBlue top-ups accelerate system degradation, making usage patterns and fluid compliance critical.
Analysis derived from Renault technical bulletins (2018–2024) and UK DVSA failure statistics (2020–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT R9M-404.
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
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DVLA: Engine Changes & MoT
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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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