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 .
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.
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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.
Aftermarket ECU tuning is common on the R9M-450 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
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.
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Regulation (EC) No 715/2007
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