The Renault R9M 409 is a 1,749 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a DOHC 16‑valve layout, common‑rail direct injection, and a variable geometry turbocharger (VGT). In standard form it delivered 96 kW (130 PS) and 300 Nm of torque, with responsive low‑rpm delivery suited to compact and subcompact applications.
Fitted to models such as the Clio V, Captur II, and Arkana—specifically the Blue dCi 130 variants—the R9M 409 was engineered for urban efficiency, low emissions, and compact packaging. Emissions compliance was achieved through cooled exhaust gas recirculation (EGR), a diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue, meeting Euro 6d-TEMP and Euro 6d standards.
One documented concern is premature wear of the high-pressure fuel pump (HPFP) cam follower under frequent cold-start cycles, highlighted in Renault Service Information Bulletin NTM‑21‑2021. This issue stems from marginal lubrication during short urban trips and was addressed in mid‑2022 with a revised cam follower design and updated ECU calibration to reduce injection pressure spikes.
Production years 2018–2020 meet Euro 6d-TEMP standards; 2021–2023 models comply with Euro 6d (VCA UK Type Approval #VCA/EMS/2018/12543).
The Renault R9M 409 is a 1,749 cc inline‑four turbo‑diesel engineered for compact hatchbacks and crossovers (2018–2023). It combines Bosch CP4.2 common‑rail injection with a single variable‑geometry turbocharger to deliver responsive low-end torque and urban drivability. Designed to meet Euro 6d-TEMP and Euro 6d emissions standards, it integrates SCR/AdBlue technology for NOx control while maintaining fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,749 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 80.0 mm × 87.4 mm | |
| Power output | 96 kW (130 PS) | |
| Torque | 300 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d-TEMP (2018–2020); Euro 6d (2021–2023) | |
| 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 C5 (SAE 0W‑30) | |
| Dry weight | 142 kg |
The R9M 409 provides responsive urban performance but requires strict adherence to 15,000 km oil change intervals using RN0720/ACEA C5 (0W‑30) oil to protect the CP4.2 high-pressure fuel pump and cam follower. Extended oil life or incorrect viscosity increases risk of HPFP seizure. AdBlue must meet ISO 22241 standards; contaminated fluid can damage the SCR catalyst. DPF regeneration cycles must complete uninterrupted—frequent short trips may trigger limp mode. Mid‑2022+ units feature revised cam followers per Renault NTM‑21‑2021.
Oil Specs: Requires Renault RN0720 or ACEA C5 (0W‑30) specification (Renault SIB NTM‑21‑2021). Not compatible with older C2/C3 oils due to LSPI protection requirements.
Emissions: Euro 6d-TEMP applies to 2018–2020 builds; Euro 6d certification confirmed for 2021–2023 registrations (VCA Type Approval #VCA/EMS/2018/12543).
Power Ratings: Measured under ISO 1585 standards. Output consistent across all markets (Renault PT‑2022).
Renault Technical Information System (TIS): Docs R9M‑ENG‑01, R9M‑TURBO‑03, NTM‑21‑2021
VCA Type Approval Database (VCA/EMS/2018/12543)
ISO 1585: Road vehicles — Engine test code
The Renault R9M 409 was used across Renault's Clio V, Captur II, and Arkana platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Captur and compact exhaust routing in the Arkana—and from mid‑2022 the HPFP/cam follower upgrade improved durability, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crankshaft pulley (Renault TIS R9M‑ID‑01). The 7th VIN digit for Renault vehicles is 'R' for R9M applications. Pre-mid‑2022 units use Bosch EDC17C84 ECU with early HPFP (part 0445020BBB); mid‑2022+ revisions use updated HPFP (0445020CCC) and revised cam follower. Critical differentiation from R9M 402: R9M 409 includes SCR/AdBlue system and higher torque output (300 Nm vs 260 Nm).
The R9M 409's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear, with elevated incidence in vehicles subjected to frequent cold starts and short urban trips. Renault internal field data from 2022 indicated over 8% of pre-mid‑2022 engines required HPFP replacement before 100,000 km, while UK DVSA MOT records show SCR-related failures rising after 120,000 km in high-mileage urban fleets. Short-trip driving and poor oil quality accelerate HPFP degradation, making oil discipline and AdBlue purity critical.
Analysis derived from Renault technical bulletins (2018–2022) and UK DVSA failure statistics (2020–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT R9M-409.
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