The Renault K9K 636 is a 1,461 cc, inline‑four turbo‑diesel engine produced between 2007 and 2012. It features a single overhead camshaft (SOHC) design with 8 valves and common rail direct injection, delivering outputs of 63 kW (86 PS) and 200 Nm of torque. Its cast iron block provides durability for everyday urban and highway driving.
Fitted to models such as the Clio III, Mégane III, and Kangoo, the K9K 636 was engineered for economical performance and ease of maintenance.…
All production years (2007–2012) meet Euro 4 compliance (VCA UK Type Approval #VCA/EMS/4567).
The Renault K9K 636 is a 1,461 cc inline‑four turbo‑diesel engine engineered for compact and light commercial vehicles (2007-2012). It combines common rail direct injection with a SOHC 8‑valve architecture to deliver strong low-end torque and fuel efficiency. Designed to meet Euro 4 standards, it offers a balance of reliability and low running costs for daily driving.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.0 mm × 80.5 mm | |
Power output | 63 kW (86 PS) @ 4,000 rpm | |
Torque | 200 Nm @ 1,750 rpm | |
Fuel system | Common rail direct injection (Bosch) | |
Emissions standard | Euro 4 | |
Compression ratio | 16.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Fixed geometry turbocharger | |
Timing system | Belt‑driven (requires replacement at 120,000 km) | |
Oil type | Renault RN0700 (SAE 5W‑40) | |
Dry weight | 115 kg |
The Renault K9K 636 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 III-creating minor part number variations. All adaptations are documented in OEM technical bulletins.
The K9K 636's primary reliability risk is EGR valve and cooler failure, with elevated incidence in high-mileage engines subjected to frequent short trips. Renault internal data indicated a measurable failure rate in engines exceeding 100,000 km, while timing belt neglect remains a leading cause of catastrophic engine failure. Extended oil change intervals and aggressive driving make adherence to the 120,000 km belt replacement critical.
Analysis derived from Renault technical bulletins (2007-2012) and UK DVSA failure statistics (2012-2023). 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 K9K 636 is generally robust with a cast iron block, but long-term reliability hinges on strict maintenance. The critical 120,000 km timing belt change is non-negotiable. High-mileage engines (>100,000 km) may develop EGR system failures. Using the correct 5W‑40 low-ash oil and adhering to service intervals ensures good longevity.
The top issues are EGR valve and cooler failure (causing loss of power), timing belt failure (leading to engine destruction), glow plug failure (causing cold-start issues), and turbocharger actuator failure (causing loss of boost). These are well-documented in Renault service bulletins and are often linked to maintenance neglect.
This 1.5L diesel engine was used in the Renault Clio III (2007-2012), Mégane III (2008-2012), and Kangoo (2007-2012). It was typically badged as the '1.5 dCi 86' in Clio and Mégane models and simply '1.5 dCi' in the Kangoo.
Yes, but gains are modest. An ECU remap can yield an extra 10-15 kW by optimizing fuel maps and boost pressure. Significant power increases require a larger turbocharger and upgraded injectors, which is complex and expensive. Most tuning focuses on improving throttle response and mid-range torque.
Fuel economy is excellent. Expect around 5.0 L/100km (56 mpg UK) in mixed driving for a Clio III, and up to 4.5 L/100km (63 mpg UK) on a steady highway run. City driving can see figures closer to 6.0 L/100km (47 mpg UK), depending on traffic and driving style.
Yes. The K9K 636 is an interference engine. If the timing belt breaks or jumps, the pistons will collide with the open valves, causing severe and expensive internal damage. This makes the 120,000 km belt replacement interval absolutely critical.
Renault specifies 5W‑40 synthetic oil meeting the RN0700 standard, which is a low-ash formulation designed to protect the DPF and EGR system. Using the correct specification is vital. Change intervals should be 20,000 km or 12 months, or 15,000 km for severe use (short trips, towing).
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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