The Renault K9K 804 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2012 and 2018. It features a cast‑iron block, aluminium head, common rail direct injection, and a variable‑geometry turbocharger (VGT). In standard form, it delivers 66 kW (90 PS) and 220 Nm of torque, offering improved low‑end response and efficiency over its fixed‑geometry predecessor.
Fitted primarily to the Clio IV, Captur I, and Twingo III, the K9K 804 was engineered for enhanced u…
All production years meet Euro 5 standards; models from 2015–2018 may meet Euro 6 compliance depending on market (VCA UK Type Approval #VCA/EMS/6789).
The Renault K9K 804 is a 1,461 cc inline‑three turbo‑diesel engineered for B-segment platforms (2012-2018). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver enhanced low‑end torque and smoother power delivery. Designed to meet Euro 5 and Euro 6 standards, it prioritizes urban efficiency 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 (all); Euro 6 (2015 onwards, market-dependent) | |
Compression ratio | 16.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Variable‑geometry turbo (Honeywell) | |
Timing system | Chain (front‑mounted) | |
Oil type | Renault RN0710 (SAE 5W‑30) | |
Dry weight | 112 kg |
The Renault K9K 804 was used across Renault's B-segment platforms with transverse mounting. This engine received platform-specific adaptations-revised engine mounts for the Captur I and updated cooling routing for the Clio IV-and from 2015 the introduction of updated engine management for Euro 6 compliance, creating minor ECU software differences. All adaptations are documented in OEM technical bulletins.
The K9K 804's primary reliability risk remains EGR system failure, with elevated incidence in vehicles subjected to frequent short urban journeys. Renault internal service data indicates a persistent frequency of EGR-related repairs, while UK DVSA MOT statistics show EGR and DPF faults as common causes of emissions test failure. Short-trip driving accelerates carbon and soot buildup, making preventative cleaning and ensuring DPF regeneration critical.
Analysis derived from Renault technical bulletins (2012-2018) and UK DVSA failure statistics (2018-2023). 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 804 is mechanically robust, with its timing chain designed for longevity. Its main vulnerabilities are the EGR system and DPF, both prone to issues with urban driving. With proactive EGR/DPF maintenance and strict oil changes using RN0710 spec oil, it can be a dependable engine.
The most frequent issues are EGR valve/cooler failure, DPF clogging (especially with short trips), and VGT actuator faults. Glow plug/module problems and oil leaks from the rocker cover are also common. These are well-documented in Renault service bulletins like 15C008.
The K9K 804 (90 PS dCi) was primarily used in the Renault Clio IV (2012–2018), Captur I (2013–2018), and Twingo III (2014–2018). It was also fitted to the Dacia Sandero II (2013–2018) as part of the Renault Group.
Yes, the K9K 804 responds well to ECU remapping. Stage 1 tunes can safely increase power to around 110-115 PS and torque to 250-260 Nm. The variable-geometry turbo and standard internals are generally robust enough for this level of increase without hardware modifications.
Excellent. In a Clio IV dCi 90, expect combined figures of ~4.2 L/100km (67 mpg UK). Real-world economy is typically 55-65 mpg UK, depending on driving style. Its VGT turbo enhances low-speed efficiency, making it ideal for city driving.
Yes. The K9K 804 is an interference engine. If the timing chain were to fail (though rare), the pistons would collide with the open valves, causing catastrophic internal engine damage. The chain is very durable with proper maintenance.
Renault mandates the use of RN0710 specification oil, typically a 5W-30 synthetic. This low-SAPS oil is vital for protecting the VGT, maintaining chain lubrication, and ensuring the DPF functions correctly without becoming clogged.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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