The Renault M4R 704 is a 1,997 cc, inline‑four petrol engine produced between 2008 and 2015. It features dual overhead camshafts (DOHC), 16 valves, and variable valve timing (VVT) on the intake camshaft. In standard applications, it delivers 103 kW (140 PS) and 195 Nm of torque, providing a balance of responsiveness and efficiency for its class.
Fitted to models such as the Mégane III, Scénic III, and Laguna III, the M4R 704 was engineered for refined daily driving with an emp…
Production years 2008–2010 meet Euro 4 standards; 2011–2015 models meet Euro 5 compliance depending on market .
The Renault M4R 704 is a 1,997 cc inline‑four petrol engine engineered for compact and mid‑size family vehicles (2008-2015). It combines DOHC 16-valve architecture with variable valve timing to deliver smooth, linear power delivery. Designed to meet Euro 4 and Euro 5 standards, it balances everyday drivability with respectable fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,997 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 84.5 mm × 89.0 mm | |
Power output | 103 kW (140 PS) @ 6,000 rpm | |
Torque | 195 Nm @ 3,750 rpm | |
Fuel system | Sequential multi-point fuel injection | |
Emissions standard | Euro 4 (2008–2010); Euro 5 (2011–2015) | |
Compression ratio | 10.7:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | Renault RN0700 (SAE 5W‑40) | |
Dry weight | 142 kg |
The Renault M4R 704 was used across Renault's Mégane III and Laguna III platforms with transverse mounting. This engine received platform-specific adaptations-slightly different engine mounts for the Scénic III-but no major facelift revisions occurred during its production run, ensuring broad parts compatibility. All adaptations are documented in OEM technical bulletins.
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Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The M4R 704 is generally considered a robust and reliable engine when maintained correctly. Its main weakness is the VVT solenoid, which is prone to failure if oil changes are neglected. With regular servicing using the correct RN0700 oil, these engines can easily exceed 200,000 km without major issues. The timing chain is designed to last the engine's lifetime.
The most frequent issues are VVT solenoid failure (causing rough idle and codes), intake manifold runner motor failure (affecting torque), valve cover gasket leaks, and ignition coil pack failures. These are well-documented in Renault service bulletins and are generally straightforward to diagnose and repair.
The M4R 704 2.0L petrol engine was used in the Renault Mégane III (2008-2015), Scénic III (2009-2015), and Laguna III (2008-2015). It was typically found in mid-range trim levels like Dynamique and GT Line, producing 140 PS. It was not used in performance variants like the RS.
Yes, but gains are modest due to its naturally aspirated design. ECU remaps can yield 5-10 kW extra by optimizing ignition and fuel maps. More significant power increases require forced induction (turbo/supercharger kits), which is complex and expensive. Most owners focus on improving throttle response rather than peak power.
Real-world fuel economy is respectable for its era. Expect around 8.5 L/100km (33 mpg UK) in combined driving for a Mégane or Scénic. Highway cruising can see figures closer to 6.5 L/100km (43 mpg UK), while city driving may be 10.5 L/100km (27 mpg UK) or higher, depending on traffic and driving style.
Yes. The M4R 704 is an interference engine. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing catastrophic internal damage. Fortunately, the chain is very durable and rarely fails if the engine is properly maintained.
Renault specifies RN0700 specification oil, typically SAE 5W-40 viscosity. Using a high-quality, fully synthetic oil meeting this standard is crucial for protecting the VVT system and ensuring long engine life. Oil should be changed every 15,000 km or annually, whichever comes first.
Comprehensive technical documentation and regulatory references
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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.
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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.
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