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, effo…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The M9R 800 is a powerful and technologically advanced engine, but its long-term reliability depends heavily on meticulous maintenance of its fuel and emissions systems. The high-pressure injectors and AdBlue system are its primary vulnerabilities. With strict adherence to oil and fuel filter changes, use of high-quality diesel and AdBlue, these engines can be very durable and exceed 200,000 km without major issues.
The most frequent issues are high-pressure fuel injector failures (causing misfires), AdBlue injector clogging (leading to limp mode), DPF blockages (resulting in power loss), and turbocharger actuator failures (causing boost issues). These are well-documented in Renault service information bulletins, particularly concerning the fuel system.
The M9R 800 2.3L diesel engine was used exclusively in Renault's premium models during its production run: the Talisman sedan (2018-2023) and the fifth-generation Espace MPV (2018-2023). It was the top-tier diesel option for these models, offering the highest power output in the M9R family and meeting the latest Euro 6d emissions standards.
Yes, the M9R 800 has significant tuning potential. ECU remaps can safely increase power to 170-190 kW and torque to 480-500 Nm. The engine's robust internals and strong twin-scroll turbo can handle these gains. More aggressive tuning requires upgraded intercoolers and potentially injectors to ensure reliability under increased stress and emissions system load.
Fuel economy is respectable for its size and performance. Expect around 9.5 L/100km in mixed driving and 6.8 L/100km on the highway, averaging 7.8-8.2 L/100km combined. This translates to roughly 34-36 mpg (UK) in real-world conditions. Aggressive driving or unresolved emissions system issues will significantly reduce this figure.
Yes. The M9R 800 is an interference engine. If the timing chain were to fail or jump timing, the pistons would collide with the open valves, resulting in catastrophic internal engine damage that requires a complete rebuild or replacement.
Renault specifies a 5W-30 synthetic oil meeting the RN0720 standard. This low-SAPS (Sulphated Ash, Phosphorus, Sulphur) oil is essential for protecting the DPF and SCR systems from clogging. Change intervals should not exceed 20,000 km or 12 months, whichever comes first, to maintain engine and emissions system health.
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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