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…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The R9M 450 offers strong low-end torque and good refinement, but early units (2018–2020) have known fuel pump drive wear issues under urban use. Post-2020 revisions improved durability. With strict adherence to oil changes (Renault RN0720, every 20,000 km) and mixed driving, it can be reliable beyond 200,000 km.
Top issues include high-pressure fuel pump drive wear, DPF regeneration failures in city driving, EGR cooler leaks, and turbo actuator calibration drift. These are documented in Renault SIB 13B01 and TIS updates, not anecdotal reports.
The 1.7 dCi 130 (R9M 450) appears in the Kadjar (2018–2023), Megane IV (2018–2023), and Scénic IV (2018–2023). Nissan also used a closely related variant in the Qashqai and X-Trail (2019–2021) under their dCi 130 branding.
Yes, but cautiously. Stage 1 ECU remaps typically yield +15–25 kW, leveraging the robust CP4.2 and Garrett turbo. However, the fuel pump drive remains a weak point—any tuning should include the SIB 13B01 upgrade and enhanced cooling to avoid premature failure.
Excellent for its class. In a Megane IV 1.7 dCi 130, expect ~5.2 L/100km (city) and ~4.0 L/100km (highway), or ~55 mpg UK combined. Real-world mixed driving typically returns 48–58 mpg (UK), depending on conditions and maintenance.
Yes. Like all modern DOHC diesels, the R9M 450 is an interference design. Timing chain failure (rare but possible) can cause piston-to-valve contact and catastrophic damage. However, the front-mounted chain has strong OEM durability when maintained properly.
Renault specifies RN0720 (5W-30) synthetic oil meeting ACEA C2/C3. This low-SAPS formulation protects the DPF and ensures proper lubrication of the fuel pump drive. Always use OEM-approved oil and change every 20,000 km or 12 months.
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.