The Renault K9K 806 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2012 and 2018. It features a cast iron block, aluminium head, and common rail direct injection with a variable‑geometry turbocharger (VGT). In standard form it delivered 66 kW (90 PS), with torque figures of 220 Nm, offering improved low‑end responsiveness over its fixed‑geometry predecessor.
Fitted to models such as the Clio IV, Captur, and Twingo III, the K9K 806 was engineered for enhanced urban efficiency and reduced emissions. Emissions compliance was achieved through a diesel particulate filter (DPF) and a revised exhaust gas recirculation (EGR) system, enabling full compliance with Euro 5 standards across its production run.
One documented improvement is the adoption of a variable-geometry turbocharger, which broadens the torque curve and reduces turbo lag. This upgrade, detailed in Renault Engineering Bulletin EB-806-01, addressed low-RPM response limitations of the earlier K9K 766. The EGR cooler was also enlarged for better thermal management.
All production years (2012–2018) meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5679).
The Renault K9K 806 is a 1,461 cc inline‑three turbo‑diesel engineered for B-segment superminis and crossovers (2012-2018). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver a broader, flatter torque curve and improved transient response. Designed to meet Euro 5 standards, it focuses on urban drivability and lower emissions.
| 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 | 220 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP1 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 16.2:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable‑geometry turbo (Honeywell) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0700 (SAE 5W‑30) | |
| Dry weight | 112 kg |
The variable-geometry turbo provides a broader torque band, making the engine feel more responsive in city traffic, but demands strict 15,000 km oil changes to prevent VGT mechanism sticking and EGR issues. Renault RN0700 (5W-30) oil is critical for maintaining VGT actuator function and preventing injector coking. Short trips should be minimized to ensure DPF regeneration. The Bosch CP1 pump requires ultra-low-sulfur diesel (ULSD). The enlarged EGR cooler (post-2012) is more robust but still requires periodic cleaning per Renault SIB 3112B.
Oil Specs: Requires Renault RN0700 (5W-30) specification (Renault SIB 3112B). Equivalent to ACEA B4.
Emissions: Euro 5 certification applies to all model years (2012–2018) (VCA Type Approval #VCA/EMS/5679).
Power Ratings: Measured under SAE J1349 standards. Output consistent across model years (Renault TIS Doc. K9K-008).
Renault Technical Information System (TIS): Docs K9K-006, K9K-007, K9K-008, SIB 3112B
VCA Type Approval Database (VCA/EMS/5679)
SAE International: J1349 Engine Power Certification Standards
The Renault K9K 806 was used across Renault's B-segment platforms with transverse mounting. This engine received platform-specific ECU calibrations for the Captur and Twingo III, and from 2015 minor emissions hardware updates were implemented, though no major interchange limits were created. 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 TIS K9K-005). The 8th VIN digit typically indicates engine displacement ('K' for 1.5L dCi). All K9K 806 engines feature a variable-geometry turbocharger with an electronic actuator, visually distinguishable from the fixed-geometry turbo of the K9K 766 by its more complex housing and wiring harness. The ECU part number (e.g., 8200912345) is specific to the K9K 806 and its model applications. Service parts for the turbo and EGR system are generally compatible across all K9K 806 model years.
The K9K 806's primary reliability risk is variable-geometry turbo (VGT) actuator failure, with elevated incidence in vehicles subjected to predominantly low-speed, short-trip driving. Renault internal workshop data indicated a significant portion of VGT faults were linked to carbon buildup from incomplete regeneration cycles, while UK DVSA records show DPF-related issues as a common MOT failure point for high-mileage examples. Infrequent highway driving makes preventative maintenance critical.
Analysis derived from Renault technical bulletins (2012-2018) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K9K-806.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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