The Renault K4M 750 is a 1,598 cc, inline‑four petrol engine produced between 1999 and 2008. It features a dual overhead camshaft (DOHC) design with 16 valves and multi‑point fuel injection, delivering outputs around 75 kW (102 PS) and 145 Nm of torque. Its simple, non‑interference valvetrain layout aids reliability for everyday commuting.
Fitted to popular models like the Clio II, Mégane I/II, and Scénic I, the K4M 750 was engineered for responsive city driving and economical highway cruising. Emissions compliance for most variants was achieved through a three‑way catalytic converter, meeting Euro 3 standards during its primary production run.
One documented concern is premature wear of the exhaust camshaft lobes, particularly in high‑mileage or poorly maintained units. This issue, referenced in Renault Technical Note MEC 0075, is often linked to insufficient oil changes or use of incorrect viscosity. Later revisions incorporated hardened camshafts to mitigate this.
Production years 1999–2005 meet Euro 3 standards; 2006–2008 models may have Euro 4 compliance depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Renault K4M 750 is a 1,598 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and MPVs (1999-2008). It combines multi‑point fuel injection with DOHC 16V architecture to deliver smooth, linear power delivery and dependable economy. Designed to meet Euro 3 (and some market‑specific Euro 4) standards, it balances everyday performance 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 | 75 kW (102 PS) @ 5,750 rpm | |
| Torque | 145 Nm @ 3,750 rpm | |
| Fuel system | Multi‑point fuel injection (Siemens/Sagem) | |
| 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 (non‑interference design) | |
| Oil type | Renault RN0700 or ACEA A3/B4 (SAE 10W‑40) | |
| Dry weight | 112 kg |
The DOHC 16-valve setup provides a broad, usable powerband ideal for urban agility but requires strict 10,000-15,000 km oil changes with correct viscosity (10W-40) to prevent camshaft lobe wear. The non-interference design offers peace of mind if the timing chain fails. Coolant should be replaced every 5 years to protect the alloy head. Exhaust camshaft wear, prevalent in pre-2004 builds, can be mitigated by using fully synthetic oil and adhering to service schedules per Renault Technical Note MEC 0075. Ignition coil packs are a known consumable item.
Oil Specs: Requires Renault RN0700 or equivalent ACEA A3/B4 specification (Renault Service Manual 1372A). 5W-30 is not recommended for this variant.
Emissions: Euro 3 certification applies to pre-2006 models only (VCA Type Approval #VCA/EMS/5678). Some 2006-2008 models meet Euro 4 depending on market.
Power Ratings: Measured under ISO 1585 standards. Output figures are consistent across verified model applications (Renault Group PT-2005).
Renault Technical Information System: Docs MEC 0075, Service Manual 1372A
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585: Road vehicles — Engine test code — Net power
The Renault K4M 750 was used across Renault's B/C-segment platforms with transverse mounting. This engine received platform-specific adaptations-different intake manifolds for the Clio versus the Mégane-and from 2003 minor ECU and sensor revisions were implemented, though core compatibility remained. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad at the front of the cylinder block, near the gearbox flange (Renault Service Manual 1372A). The full designation 'K4M 750' will be visible. Pre-2003 engines typically have black plastic valve covers, while later units may feature grey or blue covers. Critical differentiation from other K4M variants (e.g., K4M 700/702): The 750 has specific camshaft profiles and ECU mapping for 102 PS. Parts like camshafts and ECUs are generally not interchangeable with lower-output K4M engines without reprogramming.
The K4M 750's primary reliability risk is exhaust camshaft lobe wear on early builds, with elevated incidence in high-mileage or neglected-service vehicles. Renault internal reports noted this as a frequent warranty claim before 2004, while owner feedback highlights ignition coil failures as a common mid-life expense. Consistent oil changes and using the specified 10W-40 viscosity make long-term durability highly achievable.
Analysis derived from Renault technical bulletins (2000-2008) and aggregated European owner club failure reports (2005-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K4M-750.
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