The Renault K9K 780 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2008 and 2015. It features a cast‑iron block, aluminium cylinder head, double overhead camshafts (DOHC), and a variable geometry turbocharger (VGT). This compact powerplant was engineered for efficiency, delivering 66 kW (90 PS) and 200 Nm of torque, making it ideal for urban agility and low‑end responsiveness.
Fitted primarily to the Mk2 Renault Clio and Nissan Micra (K13), the K9K 780 was designed for economical, everyday driving. Its character is defined by peppy low‑rpm torque and frugal fuel consumption. Emissions compliance for most units was achieved through a diesel particulate filter (DPF) and exhaust gas recirculation (EGR), meeting Euro 5 standards.
A documented concern is premature failure of the dual‑mass flywheel (DMF), leading to drivetrain vibrations and clutch issues. This is noted in Renault Service Bulletin RSB‑08‑123, often attributed to material fatigue under high‑torque, low‑rpm conditions. From 2012, revised DMF units with improved damping characteristics were introduced for later production models.
Production years 2008–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault K9K 780 is a 1,461 cc inline‑three turbo‑diesel engineered for supermini applications (2008-2015). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver responsive low‑end torque and excellent fuel economy. Designed to meet Euro 5 standards, it balances city driving agility with long‑distance efficiency.
| 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 | 66 kW (90 PS) | |
| Torque | 200 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP1 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 15.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain‑driven | |
| Oil type | Renault RN0710 (SAE 5W‑30) | |
| Dry weight | 110 kg |
The VGT turbo provides immediate throttle response ideal for stop-start traffic but demands strict 20,000 km oil change intervals using RN0710 specification to protect the turbo bearing and timing chain. Extended idling should be avoided to prevent DPF clogging. The Bosch CP1 pump requires ultra-low-sulfur diesel (EN 590) to prevent internal wear. The dual-mass flywheel is a known wear item; symptoms include judder under acceleration. Replacement with the revised 2012+ part (per RSB-08-123) is recommended for longevity. EGR valve cleaning is advised every 60,000 km to maintain performance.
Oil Specs: Requires Renault RN0710 (5W-30) specification (Renault Owner's Manual). Equivalent to ACEA C3.
Emissions: Euro 5 certification applies to all 2008-2015 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
Renault Service Information Bulletins (RSB): RSB-08-123, RSB-09-045
VCA Type Approval Database (VCA/EMS/5678)
The Renault K9K 780 was used across Renault's B‑segment platform with transverse mounting. This engine received minor platform-specific adaptations-unique engine mounts for the Clio versus the Micra-but no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the fuel filter (Renault TIS K9K-004). The 8th digit of the VIN is 'K' for K9K engines, with the 10th digit indicating model year. Visually, the K9K 780 can be identified by its black plastic rocker cover with 'dCi 90' embossed on it. Critical differentiation from the lower-powered K9K 792 (65 PS): The 780 has a larger Garrett VGT unit and a different ECU calibration. Engine mounts are not interchangeable between Clio and Micra applications without modification (Renault SIB RSB-10-001).
The K9K 780's primary reliability risk is dual-mass flywheel (DMF) degradation, with elevated incidence in high-mileage, urban-driven vehicles. Renault internal service data indicates a significant portion of clutch replacements on pre-2012 models involve DMF failure, while UK DVSA MOT statistics frequently cite excessive vibration as a related failure point. Stop-start driving and aggressive take-offs accelerate wear, making proactive replacement with the updated part critical.
Analysis derived from Renault technical bulletins (2008-2015) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K9K-780.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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