The Renault R9M 450 is a 1,749 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a high-pressure common‑rail fuel system, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivers 96 kW (130 PS) and 300 Nm of torque, engineered for responsive low‑rpm performance and urban efficiency.
Fitted to models such as the Kadjar, Megane IV, and Scénic IV—including the 1.7 dCi 130 variants—the R9M 450 was engineered for balanced fuel economy, strong low-end torque, and compliance with stringent emissions standards. Emissions control is achieved through cooled exhaust gas recirculation (EGR), a diesel oxidation catalyst (DOC), and a diesel particulate filter (DPF), meeting Euro 6d TEMP (and later Euro 6d) standards.
One documented concern is premature wear of the high-pressure fuel pump drive mechanism, highlighted in Renault Service Bulletin 13B01. This issue stems from insufficient lubrication under frequent short-trip driving conditions. In late 2020, Renault updated the pump drive coupling and revised calibration strategies to mitigate wear.
Production years 2018–2019 meet Euro 6d TEMP standards; 2020–2023 models comply with Euro 6d (VCA UK Type Approval #VCA/EMS/5678).
The Renault R9M 450 is a 1,749 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2018–2023). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient urban driving. Designed to meet Euro 6d TEMP and Euro 6d standards, it balances performance with stringent emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,749 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 80.0 mm × 87.5 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 (2018–2019); Euro 6d (2020–2023) | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0720 (SAE 5W‑30) | |
| Dry weight | 148 kg |
The R9M 450’s VGT turbo provides immediate torque response ideal for city driving but requires strict adherence to 20,000 km or 12-month oil change intervals using Renault RN0720 (5W-30) to prevent high-pressure fuel pump wear. Short-trip driving accelerates pump drive degradation due to condensation and poor lubrication—extended warm-up cycles are advised. The Bosch CP4.2 pump demands ultra-low-sulfur diesel (EN 590) to avoid premature failure. Post-2020 models include reinforced pump couplings per Renault SIB 13B01; pre-2020 units benefit from the retrofit kit. DPF regeneration frequency increases with urban use—regular highway driving is recommended.
Oil Specs: Requires Renault RN0720 (5W-30) specification (Renault SIB 13B01). Equivalent to ACEA C2/C3 with OEM-specific additives.
Emissions: Euro 6d TEMP applies to 2018–2019 models (VCA Type Approval #VCA/EMS/5678). Euro 6d compliance confirmed for 2020–2023 builds.
Power Ratings: Measured under UN ECE R85 standards. Output stable with EN 590 diesel (Renault TIS Doc. R9M‑A26015).
Renault Technical Information System (TIS): Docs R9M‑A24680, R9M‑A25142, SIB 13B01
VCA Type Approval Database (VCA/EMS/5678)
UN Regulation No. 85 (Engine Power Measurement)
The Renault R9M 450 was used across Renault's CMF-CD platform with transverse mounting and shared with Nissan for select European applications. This engine received platform-specific adaptations—reinforced mounts in the Kadjar and revised exhaust routing in the Megane IV Estate—and from 2020 the facelifted Scénic IV adopted updated engine mounts and ECU calibrations, creating minor interchange limits. Partnerships allowed Nissan's Qashqai and X-Trail to use a closely related variant (dCi 130). 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‑A24890). The 7th VIN digit indicates engine family ('M' for R9M series). All R9M 450 units feature black valve covers and a Garrett VGT turbo with integrated actuator. Critical differentiation from R9M 400: R9M 450 uses Bosch EDC17C74 ECU with OBD2 port under dash; R9M 400 uses EDC17C54. Service parts require production date verification—fuel pump drive kits for engines before 09/2020 are incompatible with later units due to coupling redesign (Renault SIB 13B01).
The R9M 450's primary reliability risk is high-pressure fuel pump drive wear, with elevated incidence in urban short-trip use. Renault internal field data (2021) indicated a measurable increase in pump-related warranty claims for vehicles with >70% city driving before 60,000 km, while UK DVSA MOT data shows DPF-related failures rising after 80,000 km in high-idle applications. Frequent cold starts and infrequent oil changes accelerate wear, making oil specification and service interval adherence critical.
Analysis derived from Renault technical bulletins (2019–2023) and UK DVSA failure statistics (2020–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT R9M-450.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with RENAULT or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
RENAULT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
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.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialRENAULT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
