The Renault K4M 766 is a 1,598 cc, inline‑four petrol engine produced between 2006 and 2015. It features a dual overhead camshaft (DOHC) design with 16 valves and multi‑point fuel injection, delivering outputs ranging from 77 kW (105 PS) to 81 kW (110 PS) and torque figures of 145–148 Nm. Its double overhead camshaft layout enables precise valve control for responsive everyday drivability.
Fitted to models such as the Mégane III, Scénic III, and Duster, the K4M 766 was engin…
Production years 2006–2015 meet Euro 4 standards .
The Renault K4M 766 is a 1,598 cc inline‑four petrol engine engineered for compact hatchbacks and SUVs (2006-2015). It combines multi‑point fuel injection with DOHC 16‑valve architecture to deliver smooth, linear power delivery and efficient urban commuting. Designed to meet Euro 4 standards, it balances everyday usability with moderate fuel consumption.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 79.5 mm × 80.5 mm | |
Power output | 77–81 kW (105–110 PS) | |
Torque | 145–148 Nm @ 3,750 rpm | |
Fuel system | Multi‑point fuel injection (Siemens) | |
Emissions standard | Euro 4 | |
Compression ratio | 9.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven (upper camshafts) | |
Oil type | Renault RN0700 (SAE 5W‑40) | |
Dry weight | 112 kg |
The Renault K4M 766 was used across Renault's Mégane III/Scénic III platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Duster-and from 2010 minor ECU revisions for emissions, creating minor software interchange limits. All adaptations are documented in OEM technical bulletins.
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The K4M 766's primary reliability risk is exhaust camshaft lobe wear, with elevated incidence in high-mileage or poorly maintained units. Renault internal data noted this as a service concern for pre-2010 builds, while general owner reports frequently cite ignition coil failures. Extended oil change intervals and use of incorrect oil viscosity make adherence to RN0700 specification critical.
Analysis derived from Renault technical bulletins (2008-2012) and owner-reported failure patterns. 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 K4M 766 is generally robust with regular maintenance. Its main weakness is potential exhaust camshaft wear in early (pre-2010) models if oil changes are neglected or incorrect oil is used. Later units and well-serviced examples can easily exceed 200,000 km. Using Renault RN0700 5W-40 oil is crucial for longevity.
The most frequent issues are exhaust camshaft lobe wear (pre-2010), ignition coil failures causing misfires, coolant leaks from the thermostat housing, and oil leaks from the rocker cover gasket. These are well-documented in Renault service information.
The K4M 766 was primarily used in the Renault Mégane III (2008-2012), Scénic III (2009-2012), Duster (2010-2015), and Kangoo II (2008-2013). It was typically badged as the '1.6 16v' in these models.
Yes, but gains are modest. ECU remaps can yield +5-10 kW by optimizing ignition and fuel maps. More significant power requires hardware like a performance exhaust or intake, though the engine's bottom end is not designed for high boost. Reliability should be prioritized over large power gains.
Real-world fuel economy is reasonable. Expect around 8.5 L/100km in city driving and 5.5 L/100km on the highway, averaging 6.5-7.0 L/100km (40-43 mpg UK) combined for a Mégane III. Consumption varies based on driving style and vehicle condition.
Yes. The K4M 766 is an interference engine. If the timing chain were to fail (though rare), the pistons would collide with the open valves, causing catastrophic internal engine damage. Fortunately, the chain is very durable with proper oil maintenance.
Renault mandates RN0700 specification oil, typically SAE 5W-40. Using this specific oil is critical to prevent camshaft wear. Change intervals should not exceed 15,000 km or 12 months, whichever comes first, to ensure engine protection.
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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