The Renault R9M 402 is a 1,749 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a single‑scroll variable geometry turbocharger (VGT), Bosch common‑rail direct injection (up to 2,000 bar), and a dual overhead camshaft (DOHC) 16‑valve layout. Output is rated at 96 kW (130 PS) with peak torque of 300 Nm, delivering responsive urban performance with strong low‑rpm pull.
Fitted to models including the Clio V, Captur II, and Arkana, the R9M 402 was engineered for compact vehicle applications prioritizing fuel efficiency, emissions compliance, and drivability. Emissions control was achieved through cooled exhaust gas recirculation (EGR), a diesel oxidation catalyst (DOC), and a diesel particulate filter (DPF), enabling full Euro 6d‑TEMP compliance across all production years.
One documented concern is injector coking under frequent short-trip operation, highlighted in Renault Service Bulletin 6022B. This issue stems from incomplete combustion cycles and low exhaust temperatures preventing proper injector cleaning. In 2020, Renault updated injector calibration and recommended extended warm-up driving to mitigate carbon buildup.
All production years (2018–2023) meet Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/8435).
The Renault R9M 402 is a 1,749 cc inline‑four turbo‑diesel engineered for compact hatchbacks and SUVs (2018–2023). It combines Bosch common‑rail injection with a single‑scroll variable‑geometry turbocharger to deliver responsive low‑end torque and urban fuel efficiency. Designed to meet Euro 6d-TEMP emissions standards, it balances compact packaging with drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,749 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged (single‑scroll VGT) | |
| Bore × stroke | 80.0 mm × 87.4 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-TEMP | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single‑scroll VGT (BorgWarner) | |
| Timing system | Chain (front‑mounted; durable design) | |
| Oil type | Renault RN0720 (ACEA C3, SAE 5W‑30) | |
| Dry weight | 142 kg |
The compact four-cylinder layout delivers fuel-efficient urban performance but requires regular highway driving to maintain injector cleanliness and DPF health. Renault RN0720 (5W-30) oil is essential to protect the Bosch CP4.2 high-pressure fuel pump and ensure DPF compatibility. Frequent short trips below 2,000 rpm increase carbon buildup on injectors and EGR components, leading to misfires and limp-mode. Post-2020 calibration updates improved injector resilience, but preventive driving habits remain critical. No timing chain failures have been documented in service records.
Oil Specs: Requires Renault RN0720 (ACEA C3, 5W-30) specification (Renault SIB 6022B).
Emissions: Euro 6d-TEMP certification applies to all R9M 402 models (2018–2023) (VCA Type Approval #VCA/EMS/8435).
Power Ratings: Measured under UN ECE R85 standards. 96 kW output requires EN 590 diesel (Renault TIS Doc. R9M‑A201).
Renault Technical Information System (TIS): Docs R9M‑A102, R9M‑A115, SIB 6022B
VCA Type Approval Database (VCA/EMS/8435)
UN Regulation No. 85 (Engine Power Measurement)
The Renault R9M 402 was used across Renault's Clio V, Captur II, and Arkana platforms with transverse mounting and shared with Nissan for compact applications in European markets. This engine received platform-specific adaptations—revised engine mounts in the Arkana and updated EGR routing in the Captur II—and from 2021 the facelifted Clio V adopted revised injector calibration, creating minor interchange limits. Partnerships allowed Nissan's dCi 130 variants to use identical R9M 402 units. 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‑A101). The 7th VIN digit indicates engine family ('9' for R9M series). Pre-2021 models use injectors with part number 0281003220; post-2021 units feature updated injectors (0281003223) with revised spray pattern. Critical differentiation from R9M 406: R9M 402 has lower power output (96 kW vs 110 kW) and identical displacement. Service parts require production date verification—injector kits for engines before 03/2020 are incompatible with later units due to calibration differences (Renault SIB 6022B).
The R9M 402's primary reliability risk is injector coking under frequent short-trip operation, with elevated incidence in urban-driven examples. Renault internal data from 2021 indicated a notable share of pre-2020 injectors requiring cleaning or replacement before 80,000 km, while UK DVSA MOT records show DPF-related emissions faults rising in city-driven vehicles. Low exhaust temperatures and poor-quality diesel accelerate carbon buildup, making driving pattern and fuel quality critical.
Analysis derived from Renault technical bulletins (2019–2022) and UK DVSA failure statistics (2020–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT R9M-402.
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