The Renault M9R 820 is a 2,299 cc, inline‑four turbo‑diesel engine produced between 2020 and 2023. It features a double overhead camshaft (DOHC) 16‑valve layout, common rail direct injection, and a twin‑scroll turbocharger with an electrically assisted wastegate. This configuration delivers 140 kW (190 PS) and 400 Nm of torque, with the electrically controlled turbo minimizing lag for immediate throttle response.
Fitted exclusively to the fifth — generation Espace…
Production years 2020–2023 meet Euro 6d standards for all markets (EU Regulation (EC) No 715/2007).
The Renault M9R 820 is a 2,299 cc inline‑four turbo‑diesel engineered for executive MPVs and sedans (2020-2023). It combines DOHC 16-valve architecture with an electrically assisted twin-scroll turbocharger to deliver immediate, linear power and high torque for effortless performance. Designed to meet Euro 6d standards, it balances premium 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 6d | |
Compression ratio | 15.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin-scroll with electrically assisted wastegate | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | Not specified in public documentation |
The Renault M9R 820 was used across Renault's Espace V and Talisman 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.
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The M9R 820's primary reliability risk is exhaust gas temperature (EGT) sensor failure, with elevated incidence across all usage conditions. Renault internal data indicates EGT sensor faults are a leading cause for diagnostic intervention, while owner reports frequently cite AdBlue system malfunctions. Thermal cycling and software calibration make sensor replacement with the revised part critical.
Analysis derived from Renault technical bulletins (2020-2023) 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 820 is generally robust with meticulous maintenance. Its main weaknesses are the EGT sensors and AdBlue system, which are sensitive to thermal stress and require software calibration. Using the correct 5W-30 oil and servicing every 15,000 km, combined with keeping the AdBlue tank topped up with OEM fluid, greatly improves longevity. Well-maintained examples can exceed 200,000 km.
The most frequent issues are EGT sensor failures causing limp mode, AdBlue quality sensor faults leading to no-start conditions, turbocharger actuator electrical faults, and DPF pressure sensor clogging. These are well-documented in Renault service notes and owner communities.
The M9R 820 2.3L dCi diesel engine was used exclusively in the fifth-generation Renault Espace (2020-2023) and Talisman (2020-2023). It was found in higher trim levels (Intens, Initiale Paris), offering the most advanced emissions control in the M9R family.
Aftermarket ECU tuning is common on the M9R-820 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.
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 820 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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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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