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 dC…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The R9M 404 offers refined performance and full Euro 6d compliance, but is highly sensitive to AdBlue fluid quality and vehicle usage patterns. With regular operation (≥20 min/week), ISO 22241 AdBlue, EN 590 diesel, and 20,000 km oil changes, it can be durable beyond 200,000 km. Infrequent use significantly increases AdBlue system risks.
Top issues include AdBlue injector crystallisation (from inactivity or poor fluid), CP4.2 fuel pump wear, NOx sensor drift, and EGR cooler leaks. These are documented in Renault service bulletins NTM 12‑054 and NTM 07‑045, especially in low-mileage or irregularly used vehicles.
The R9M 404 powered the Clio V, Captur II, and Arkana (2019–2024) in Blue dCi 130 form. It was also used by Nissan in the Juke (F16) from 2020–2024 under Alliance agreements, always paired with Euro 6d emissions hardware including AdBlue.
Limited potential. Stage 1 ECU remaps typically yield +10–15 kW, but the SCR and AdBlue systems are tightly calibrated. Over-tuning often triggers NOx faults and AdBlue lockouts. Most owners avoid tuning due to emissions system sensitivity and modest gains.
Excellent for its class. In a Clio V Blue dCi 130, expect ~5.2 L/100km city and ~3.8 L/100km highway, or ~55 mpg UK combined. Real-world mixed driving typically returns 50–58 mpg (UK), assuming good maintenance, EN 590 diesel, and regular AdBlue top-ups.
Yes. The R9M series is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. While chain issues are rare, any timing-related fault codes or unusual noises warrant immediate inspection.
Renault specifies SAE 5W-30 oil meeting RN0720 (ACEA C3) standard. Always use a low-SAPS synthetic oil and change every 20,000 km or annually to protect the DPF, SCR catalyst, turbo, and high-pressure fuel system.
Comprehensive technical documentation and regulatory references
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