The Renault K4M 745 is a 1,598 cc, inline‑four petrol engine produced between 2000 and 2010. It features a dual overhead camshaft (DOHC) layout with 16 valves and multi‑point fuel injection. In standard form, it delivered 79 kW (107 PS) and 148 Nm of torque, providing a balance of urban agility and highway capability.
Fitted to models such as the Clio II, Mégane II, and Scénic II, the K4M 745 was engineered for responsive daily driving and fuel efficiency. Emissions complianc…
Production years 2000–2005 meet Euro 3 standards; 2006–2010 models may have Euro 4 compliance depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Renault K4M 745 is a 1,598 cc inline‑four petrol engine engineered for compact hatchbacks and MPVs (2000-2010). It combines multi‑point fuel injection with a DOHC 16‑valve head to deliver responsive low‑to‑mid range power and efficient cruising. Designed to meet Euro 3 (and some market‑specific Euro 4) standards, it balances everyday performance with economy.
| 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 | 79 kW (107 PS) @ 5,750 rpm | |
Torque | 148 Nm @ 3,750 rpm | |
Fuel system | Multi‑point fuel injection (Siemens) | |
Emissions standard | Euro 3 (pre‑2006); Euro 4 depending on market | |
Compression ratio | 9.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven | |
Oil type | Renault RN0700 (SAE 5W‑40) | |
Dry weight | 112 kg |
The Renault K4M 745 was used across Renault's B/C‑segment platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Scénic II and revised intake manifolds for the Mégane II-creating minor service part variations. All adaptations are documented in OEM technical bulletins.
The K4M 745's primary reliability risk is exhaust camshaft lobe wear on early builds, with elevated incidence in high-mileage or poorly maintained vehicles. Renault internal service data indicated a notable number of camshaft replacements under warranty for pre-2004 units, while owner reports frequently cite ignition coil failures as a secondary concern. Adherence to correct oil specification and service intervals is critical for long-term camshaft health.
Analysis derived from Renault technical bulletins (2003-2010) and owner-reported failure data (2010-2023). 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 K4M 745 is generally robust with a simple, chain-driven design. Its main weakness is camshaft wear on early models (pre-2004). With strict adherence to oil changes using RN0700 5W-40 and timely replacement of ignition coils, it can easily surpass 200,000 km. Later models are significantly more reliable.
The most frequent issues are ignition coil pack failure, oil leaks from the rocker cover gasket, and coolant leaks from the plastic thermostat housing. For early engines (pre-2004), exhaust camshaft lobe wear is a critical documented concern requiring attention.
The K4M 745 1.6L 16V petrol engine was used in the Renault Clio II (2001-2005), Mégane II (2002-2008), Scénic II (2003-2009), and Kangoo (2000-2010). It was also found in some Dacia models like the Logan and Sandero during overlapping production periods.
Yes, but gains are modest. A simple ECU remap can yield an extra 8-12 kW. More significant power increases require camshaft upgrades, a performance exhaust, and intake modifications. The bottom end is strong, but the standard camshafts are a limiting factor for serious tuning.
Real-world fuel economy is respectable. Expect around 7.5 L/100km (38 mpg UK) in mixed driving for a Mégane II. In a lighter Clio II, figures can drop to 6.8 L/100km (42 mpg UK). Highway cruising can return 5.5 L/100km (51 mpg UK).
Yes. The K4M 745 is an interference engine. If the timing chain were to fail catastrophically (which is rare), the pistons would collide with the valves, causing severe internal engine damage. Fortunately, the chain is very durable.
Renault specifies a 5W-40 synthetic oil meeting the RN0700 standard. Using this specific oil is crucial, especially for early engines, as it provides the necessary protection for the camshaft lobes. Change intervals should not exceed 15,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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