The Renault M9R 756 is a 2,299 cc, inline‑four turbo‑diesel engine produced between 2015 and 2021. It features a double overhead camshaft (DOHC) 16‑valve layout, common rail direct injection, and a twin‑scroll turbocharger. This configuration delivers outputs of 140 kW (190 PS) and 400 Nm of torque, with the twin‑scroll design minimizing turbo lag for responsive urban acceleration.
Fitted to premium models such as the Talisman and Espace V, the M9R 756 was engineered fo…
Production years 2015–2021 meet Euro 6 standards for all markets (EU Regulation (EC) No 715/2007).
The Renault M9R 756 is a 2,299 cc inline‑four turbo‑diesel engineered for executive sedans and MPVs (2015-2021). It combines DOHC 16-valve architecture with a twin-scroll turbocharger to deliver strong, linear power and high torque for effortless overtaking. Designed to meet Euro 6 standards, it balances 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 | Common rail direct injection (Bosch) | |
Emissions standard | Euro 6 | |
Compression ratio | 15.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin-scroll turbocharger | |
Timing system | Chain-driven | |
Oil type | Renault RN0720 (SAE 5W-30) | |
Dry weight | Not specified in public documentation |
The Renault M9R 756 was used across Renault's Talisman and Espace V platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU calibrations for the Espace-but no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
The M9R 756's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles with irregular service or poor fuel quality. Renault internal data indicates fuel system faults are a common cause for diagnostic intervention, while owner reports frequently cite AdBlue system malfunctions. Extended service intervals and use of incorrect fuel make pump replacement and AdBlue system checks critical.
Analysis derived from Renault technical bulletins (2015-2021) and owner-reported failure data (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 M9R 756 is generally robust with meticulous maintenance. Its main weaknesses are the high-pressure fuel pump and AdBlue system, which are sensitive to fuel quality and service intervals. Using the correct 5W-30 oil and servicing every 15,000 km, combined with using high-quality diesel and keeping the AdBlue tank topped up, greatly improves longevity. Well-maintained examples can exceed 200,000 km.
The most frequent issues are high-pressure fuel pump failures causing stalling, AdBlue system malfunctions leading to limp mode or no-start, EGR cooler leaks causing coolant contamination, and turbocharger oil feed line leaks. These are well-documented in Renault service notes and owner communities.
The M9R 756 2.3L dCi diesel engine was used exclusively in the Renault Talisman (2015-2021) and Espace V (2015-2021). It was typically found in higher trim levels (Intens, Initiale Paris), offering the highest power output in the M9R family.
Yes. The M9R 756 responds well to ECU remapping, with stage 1 tunes typically yielding 30-40 kW (40-55 PS) and 70-100 Nm more torque. The engine's internals and turbocharger are generally robust enough to handle these gains. More significant power increases require upgraded components, which is more complex and costly.
Official combined figures range from 5.0 to 6.0 L/100km (47-56 mpg UK), depending on the model and transmission. Real-world driving typically yields 6.5-8.5 L/100km (33-43 mpg UK) in mixed conditions. Highway cruising can achieve 4.5-5.5 L/100km (51-62 mpg UK).
Yes. The M9R 756 is an interference engine. If the timing chain jumps or breaks, the pistons will collide with the open valves, causing severe internal engine damage. This makes maintaining the timing chain and tensioner in good condition absolutely critical.
Renault mandates oil meeting the RN0720 specification, typically a 5W-30 synthetic. Using the correct low-ash oil is vital for protecting the DPF and timing chain. ACEA C3 is the minimum acceptable standard if RN0720 is unavailable.
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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