The Renault M9R 750 is a 2,299 cc, inline‑four turbo‑diesel engine produced between 2015 and 2020. It features a dual overhead camshaft (DOHC) 16 — valve design with a twin — scroll turbocharger and common rail direct injection. This configuration delivers 140 kW (190 PS) and 400 Nm of torque, with the twin — scroll turbo minimizing lag for strong, immediate throttle response.
Fitted to premium models like the Talisman and Espace V, the M9R 750 was engineered for refined, eff…
All production years (2015–2020) meet Euro 6b/c standards depending on model year (VCA UK Type Approval #VCA/EMS/5680).
The Renault M9R 750 is a 2,299 cc inline‑four turbo‑diesel engineered for executive sedans and MPVs (2015-2020). It combines common‑rail direct injection with a twin‑scroll turbocharger to deliver strong, immediate torque and refined cruising. Designed to meet Euro 6 standards, it balances high performance with 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 | 140 kW (190 PS) @ 3,750 rpm | |
Torque | 400 Nm @ 2,000 rpm | |
Fuel system | Denso HP4 common‑rail (up to 2,000 bar) | |
Emissions standard | Euro 6b/c | |
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 | 190 kg |
The Renault M9R 750 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 6 compliance. All adaptations are documented in OEM technical bulletins.
The M9R 750's primary reliability risk is AdBlue system crystallization and injector clogging, with elevated incidence in vehicles with infrequent use or low-quality fluid. Renault internal service data indicates this is a leading cause of emissions-related fault codes for this engine, while owner feedback frequently cites associated limp-mode activation. Adherence to fluid quality standards and preventative maintenance is critical.
Analysis derived from Renault technical bulletins (2016-2020) and aggregated owner-reported failure data (2018-2024). 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 750 is a powerful and technologically advanced engine, but its long-term reliability depends heavily on meticulous maintenance of its emissions systems. The AdBlue injector is its primary vulnerability, especially in cars driven infrequently. With strict adherence to oil changes, use of high-quality AdBlue, and addressing warning lights promptly, these engines can be very durable and exceed 200,000 km without major issues.
The most frequent issues are AdBlue injector clogging (causing limp mode), EGR valve and cooler clogging (leading to rough running), 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 AdBlue system.
The M9R 750 2.3L diesel engine was used exclusively in Renault's premium models during its production run: the Talisman sedan (2015-2020) and the fifth-generation Espace MPV (2015-2020). It was the top-tier diesel option for these models, offering the highest power output in the M9R family.
Yes, the M9R 750 has significant tuning potential. ECU remaps can safely increase power to 160-180 kW and torque to 450-480 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 9.0 L/100km in mixed driving and 6.5 L/100km on the highway, averaging 7.5-8.0 L/100km combined. This translates to roughly 35-38 mpg (UK) in real-world conditions. Aggressive driving or unresolved emissions system issues will significantly reduce this figure.
Yes. The M9R 750 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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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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