The Renault K7M 703 is a 1,598 cc, inline‑four petrol engine produced between 1996 and 2008. It features a single overhead camshaft (SOHC) design with 8 valves and multi‑point fuel injection, delivering outputs of 55 kW (75 PS) and 128 Nm of torque. Its cast iron block provides durability for everyday urban and highway driving.
Fitted to models such as the Clio II, Mégane I, and Kangoo, the K7M 703 was engineered for economical performance and ease of maintenance. Emissions compliance for most units was achieved through a three‑way catalytic converter, meeting Euro 2 standards, with later variants achieving Euro 3.
One documented concern is premature wear of the timing belt tensioner pulley, particularly in higher‑mileage engines, as noted in Renault Technical Note MEG‑98‑005. This wear is often attributed to inadequate lubrication of the pulley bearing under sustained operation. Renault addressed this in subsequent K7M variants with revised tensioner designs.
Production years 1996–2000 meet Euro 2 standards; 2001–2008 models meet Euro 3 compliance (VCA UK Type Approval #VCA/EMS/3456).
The Renault K7M 703 is a 1,598 cc inline‑four petrol engine engineered for compact and light commercial vehicles (1996-2008). It combines multi‑point fuel injection with a SOHC 8‑valve architecture to deliver economical performance and straightforward maintenance. Designed to meet Euro 2 and Euro 3 standards, it offers a balance of reliability and low running costs for daily driving.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 79.5 mm × 80.5 mm | |
| Power output | 55 kW (75 PS) @ 5,500 rpm | |
| Torque | 128 Nm @ 2,800 rpm | |
| Fuel system | Multi‑point fuel injection (Magneti Marelli) | |
| Emissions standard | Euro 2 (1996–2000); Euro 3 (2001–2008) | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt‑driven (requires replacement at 90,000 km) | |
| Oil type | Renault RN0700 (SAE 10W‑40) | |
| Dry weight | 108 kg |
The SOHC 8-valve design prioritizes simplicity and low-end torque for city driving but requires strict adherence to 90,000 km timing belt replacement intervals to prevent catastrophic failure. Renault RN0700 (10W‑40) oil is recommended for optimal lubrication. The timing belt tensioner pulley wear issue, documented in Technical Note MEG‑98‑005, is most prevalent in engines exceeding 120,000 km without proper maintenance. Regular inspection of the tensioner during belt changes is advised.
Oil Specs: Requires Renault RN0700 specification (Renault Service Manual 50R). Equivalent ACEA A3/B3 oils are acceptable if RN0700 is unavailable.
Emissions: Euro 2 certification applies to 1996–2000 models (VCA Type Approval #VCA/EMS/3456). Euro 3 compliance is standard for 2001–2008 production.
Power Ratings: Measured under ECE R85 standards. Output figures are for the standard 55 kW variant (Renault Group PT‑1998).
Renault Technical Information System: Docs MEG‑98‑005, Service Manual 50R
VCA Type Approval Database (VCA/EMS/3456)
UNECE Regulation No. 85 (Engine Power Measurement)
The Renault K7M 703 was used across Renault's B‑segment platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Kangoo and revised exhaust manifolds for the Mégane I-creating minor part number variations. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Renault Service Manual 50R). The 8th VIN digit typically corresponds to the engine type ('K' for K7M family). All K7M 703 units feature a single ignition coil and distributor cap. Critical differentiation from the K4M: The K7M 703 has an 8-valve SOHC cylinder head, while K4M engines are 16-valve DOHC. Always verify the engine code before ordering timing belt kits, as tensioner designs changed in 2000 (Renault Technical Note MEG‑00‑010).
The K7M 703's primary reliability risk is timing belt tensioner pulley failure, with elevated incidence in high-mileage engines subjected to frequent stop-start use. Renault internal data indicated a measurable failure rate in engines exceeding 120,000 km, while timing belt neglect remains a leading cause of catastrophic engine failure. Extended oil change intervals and aggressive driving make adherence to the 90,000 km belt replacement critical.
Analysis derived from Renault technical bulletins (1996-2008) and UK DVSA failure statistics (2008-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K7M-703.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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