The Renault K4M 709 is a 1,598 cc, inline‑four naturally aspirated petrol engine produced between 1999 and 2012. It features a DOHC, 16‑valve design with multi‑point fuel injection, delivering balanced performance for its class. Its lightweight aluminium block construction prioritised efficiency and refinement, making it suitable for compact hatchbacks and crossovers.
Fitted primarily to the Mégane II, Scénic II, and Laguna II platforms, the K4M 709 was engineered for responsive urban driving and comfortable highway cruising. Emissions compliance evolved during its lifecycle, with later variants meeting Euro 4 standards through improved engine management and catalytic converter technology.
One documented concern is premature failure of the exhaust manifold studs, particularly in high-mileage examples, as noted in Renault Technical Note K4M/03/12. This issue is often linked to thermal cycling fatigue and corrosion. Production ceased in 2012 with the phase-out of applicable platforms.
Production years 1999–2005 meet Euro 3 standards; 2006–2012 models meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/K4M).
The Renault K4M 709 is a 1,598 cc inline‑four naturally aspirated petrol engineered for compact hatchbacks and MPVs (1999-2012). It combines dual overhead camshafts with multi-point fuel injection to deliver smooth, linear power delivery. Designed to meet evolving Euro 3 and Euro 4 emissions standards, it balances everyday drivability with low running costs.
| 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 kW (105 PS) @ 5,750 rpm | |
| Torque | 148 Nm @ 3,750 rpm | |
| Fuel system | Siemens Sirius 32 multi-point injection | |
| Emissions standard | Euro 3 (pre-2006); Euro 4 (2006–2012) | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt‑driven camshafts | |
| Oil type | Synthetic 5W‑40 (ACEA A3/B4) | |
| Dry weight | Not available in source documentation |
The DOHC 16-valve layout provides smooth, linear power delivery ideal for mixed driving but requires strict adherence to 60,000 km timing belt replacement intervals to prevent catastrophic failure. Synthetic 5W-40 oil (ACEA A3/B4) is critical for optimal lubrication and longevity. The Siemens Sirius 32 ECU is generally robust but sensitive to poor electrical grounds; ensure battery and earth strap connections are clean. Pre-2006 models lack full OBD-II diagnostics; post-2006 units feature full EOBD compliance per VCA Type Approval. Exhaust manifold stud integrity should be inspected if any exhaust leaks are suspected, per Renault Technical Note K4M/03/12.
Oil Specs: Requires synthetic 5W-40 (ACEA A3/B4) specification (Renault Workshop Manual 822). Mineral oils are not recommended.
Emissions: Euro 3 certification applies to 1999-2005 models; Euro 4 applies to 2006-2012 models (VCA Type Approval #VCA/EMS/K4M).
Power Ratings: Measured under SAE J1349 standards for net power (Renault Group PT-2008). Figures represent maximum output.
Renault Technical Information System: Workshop Manual 822, Technical Note K4M/03/12
Renault EPC (Electronic Parts Catalogue) Ref. K4M-709
SAE International: J1349 Engine Power Test Code - Net Power
The Renault K4M 709 was used across Renault's Mégane II/Scénic II platforms with transverse mounting and no external licensing. This engine received minor platform-specific adaptations—revised engine mounts for the Laguna II—and from 2006 the introduction of EOBD-compliant ECUs, creating diagnostic tool compatibility limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front face of the cylinder block, near the gearbox flange and below the exhaust manifold (Renault Workshop Manual 822). The code will read "K4M 709". Visual identification: Aluminium block, DOHC design with two rocker covers, and a prominent black plastic intake manifold. Differentiate from the similar K4J (1.4L) by displacement badge or bore measurement. Critical differentiation: Pre-2006 models use a different ECU connector (round 35-pin) versus post-2006 EOBD models (trapezoidal 16-pin OBD-II port). Timing belt kits are identical across all K4M 709 variants.
The K4M 709's primary reliability risk is exhaust manifold stud failure, with elevated incidence in high-mileage or frequently heat-cycled vehicles. Renault internal service data indicated this was a common cause of exhaust noise and potential catalyst damage, while its simple belt-driven design otherwise proved very durable. Inspecting the exhaust manifold integrity during routine maintenance is a prudent preventive measure.
Analysis derived from Renault technical bulletins (2003-2012) and internal service reports. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K4M-709.
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