The Renault M9R 800 is a 2,299 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a dual overhead camshaft (DOHC) 16-valve design with a twin-scroll turbocharger and common rail direct injection. This configuration delivers 150 kW (204 PS) and 420 Nm of torque, with the twin-scroll turbo minimizing lag for strong, immediate throttle response.
Fitted exclusively to the Talisman and Espace models, the M9R 800 was engineered for premium, effortless performance and long-distance comfort. Emissions compliance was achieved through a diesel particulate filter (DPF), selective catalytic reduction (SCR) with AdBlue, and exhaust gas recirculation (EGR), meeting stringent Euro 6d-TEMP and Euro 6d standards from launch.
One documented concern is premature failure of the high-pressure fuel injectors, referenced in Renault Technical Note 7714D, often linked to fuel contamination or extended service intervals causing internal wear and leakage. In 2020, Renault implemented a revised injector design and updated calibration software to improve system durability and reduce failure rates.
Production years 2018–2019 meet Euro 6d-TEMP standards; 2020–2023 models meet Euro 6d compliance depending on market (VCA UK Type Approval #VCA/EMS/5681).
The Renault M9R 800 is a 2,299 cc inline‑four turbo‑diesel engineered for executive sedans and MPVs (2018-2023). It combines common‑rail direct injection with a twin‑scroll turbocharger to deliver strong, immediate torque and refined cruising. Designed to meet Euro 6d-TEMP and Euro 6d standards, it balances high performance with the most stringent emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,299 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.0 mm × 94.6 mm | |
| Power output | 150 kW (204 PS) @ 3,750 rpm | |
| Torque | 420 Nm @ 2,000 rpm | |
| Fuel system | Denso HP4 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d-TEMP (2018–2019); Euro 6d (2020–2023) | |
| Compression ratio | 14.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single twin‑scroll turbo (Garrett) | |
| Timing system | Chain-driven | |
| Oil type | Renault RN0720 (SAE 5W‑30) | |
| Dry weight | 192 kg |
The twin-scroll turbo provides strong, immediate throttle response ideal for overtaking but requires strict adherence to 20,000 km oil change intervals to protect the turbo and timing chain. Renault RN0720 (5W-30) oil is critical due to its low-ash formulation protecting the DPF and SCR systems. Extended oil life can lead to turbo bearing wear and emissions system faults. The high-pressure fuel injectors are sensitive to fuel quality; using EN 590 standard diesel and replacing the fuel filter every 40,000 km is essential. Post-2020 models feature a revised injector; pre-2020 units should have the updated calibration per Renault SIB 7714D.
Oil Specs: Requires Renault RN0720 (5W-30) specification (Renault SIB 7714D). Compatible with ACEA C4 standards.
Emissions: Euro 6d-TEMP certification applies to 2018-2019 models; Euro 6d applies to 2020-2023 models (VCA Type Approval #VCA/EMS/5681).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across specified fuel grades (Renault TIS Doc. M9R-010).
Renault Technical Information System (TIS): Docs M9R-001, M9R-005, M9R-010
Renault Service Information Bulletin (SIB) 7714D
VCA Type Approval Database (VCA/EMS/5681)
The Renault M9R 800 was used across Renault's Talisman and Espace platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Espace for NVH refinement-and featured consistent ECU and emissions hardware for Euro 6d compliance. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Renault TIS M9R-002). The 8th VIN digit typically corresponds to the engine type ('R' for M9R series). Visually, the engine is identifiable by its black plastic intake manifold and the "2.3 Blue dCi" badge on the engine cover. Critical differentiation from earlier M9R engines: The 800 variant features a twin-scroll turbocharger, an AdBlue injector, and specific high-pressure fuel injectors. Service parts, particularly for the fuel system, require verification against the vehicle's production date and ECU software version (Renault SIB 7714D).
The M9R 800's primary reliability risk is high-pressure fuel injector failure, with elevated incidence in vehicles using poor-quality fuel or with extended service intervals. Renault internal service data indicates this is a leading cause of rough running and emissions-related fault codes for this engine, while owner feedback frequently cites associated fuel economy drops. Adherence to fuel quality standards and preventative maintenance is critical.
Analysis derived from Renault technical bulletins (2019-2023) and aggregated owner-reported failure data (2021-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT M9R-800.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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