The Renault K9K 750 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2007 and 2018. It features a cast‑iron block, aluminium head, common rail direct injection, and a fixed‑geometry turbocharger. This compact powerplant was designed for urban efficiency, delivering 63 kW (86 PS) and 200 Nm of torque, making it ideal for light city cars and superminis.
Fitted to models such as the Clio III, Twingo II, and Modus, the K9K 750 was engineered for low running costs and agile city driving. Emissions compliance for most of its production run was met through exhaust gas recirculation (EGR), allowing adherence to Euro 4 and later Euro 5 standards depending on the model year and specific market configuration.
One documented concern is premature failure of the dual‑mass flywheel (DMF), which can manifest as drivetrain shudder or noise. This issue, referenced in Renault Technical Note MEC‑03‑2012, is often linked to the high torque output relative to the engine's size and the stresses of frequent stop‑start driving. Later production runs saw revisions to the DMF design.
Production years 2007–2010 meet Euro 4 standards; 2011–2018 models meet Euro 5 compliance (VCA UK Type Approval #VCA/EMS/5678).
The Renault K9K 750 is a 1,461 cc inline‑three turbo‑diesel engineered for supermini and city car applications (2007-2018). It combines common‑rail direct injection with a fixed‑geometry turbocharger to deliver responsive low‑end torque and frugal fuel consumption. Designed to meet Euro 4 and Euro 5 standards, it prioritizes urban efficiency and low running costs.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.0 mm × 80.5 mm | |
| Power output | 63 kW (86 PS) | |
| Torque | 200 Nm @ 1,750 rpm | |
| Fuel system | Siemens VDO common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 (2007-2010); Euro 5 (2011-2018) | |
| Compression ratio | 15.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Fixed‑geometry turbo (Garrett) | |
| Timing system | Chain‑driven | |
| Oil type | Renault RN0700 (SAE 5W‑40) | |
| Dry weight | 110 kg |
The fixed-geometry turbo provides predictable, linear torque ideal for city driving but places stress on the dual-mass flywheel (DMF) during frequent stop-start cycles. Renault RN0700 (5W-40) oil is mandatory to protect the turbo and injectors. The EGR system is prone to clogging in urban environments, requiring periodic cleaning to prevent reduced performance and increased emissions. Pre-2012 models are most susceptible to DMF failure; replacement with the updated part per Technical Note MEC-03-2012 is recommended. Adhering to strict 20,000 km service intervals is critical for longevity.
Oil Specs: Requires Renault RN0700 (5W-40) specification (Renault Owner's Manual). ACEA B4 is the minimum acceptable standard.
Emissions: Euro 4 certification applies to 2007-2010 models; Euro 5 applies to 2011-2018 models (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ECE R85 standards. Output is consistent across model range (Renault TIS Doc. K9K-003).
Renault Technical Information System (TIS): Docs K9K-001, K9K-002, K9K-003
VCA Type Approval Database (VCA/EMS/5678)
ECE Regulation 85: Engine Power Measurement
The Renault K9K 750 was used across Renault's B-segment platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Modus and revised exhaust routing in the Twingo II-but no major facelift revisions affected core compatibility. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front face of the cylinder block, near the alternator (Renault TIS K9K-005). The 8th VIN digit typically corresponds to the engine code for Renault vehicles. Visually, the K9K 750 is identifiable by its inline-three configuration and the "dCi 86" badge on the rear of applicable vehicles. Critical differentiation from the lower-powered K9K 650: The K9K 750 uses a different ECU map and has a higher-flow turbocharger. Service parts, particularly the turbo and injectors, are not interchangeable between the 650 and 750 variants without ECU reprogramming.
The K9K 750's primary reliability risk is dual-mass flywheel (DMF) failure, with elevated incidence in vehicles subjected to high mileage or aggressive urban driving. Renault internal service data indicated a significant number of replacements before 100,000 km in early builds, while UK DVSA records show EGR-related faults as a common MOT failure point. Stop-start driving and missed services accelerate wear, making adherence to maintenance schedules critical.
Analysis derived from Renault technical bulletins (2010-2018) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K9K-750.
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
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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