The Renault K9K 826 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2012 and 2018. It features a single overhead camshaft (SOHC), common rail direct injection, and a fixed‑geometry turbocharger. In standard form it delivered 50 kW (68 PS), prioritizing fuel economy and low running costs for entry — level urban vehicles.
Fitted primarily to the Twingo III and Clio IV, the K9K 826 was engineered as an economical powertrain for city driving. Emissions compl…
All production years (2012–2018) meet Euro 5 standards .
The Renault K9K 826 is a 1,461 cc inline‑three turbo‑diesel engineered for supermini vehicles (2012-2018). It combines common‑rail direct injection with a fixed‑geometry turbocharger to deliver adequate low‑end torque for urban mobility while maximizing fuel efficiency. Designed to meet Euro 5 standards, it focuses on cost-effective ownership.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel | |
Configuration | Inline‑3, SOHC, 12‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.0 mm × 80.5 mm | |
Power output | 50 kW (68 PS) | |
Torque | 160 Nm @ 1,750 rpm | |
Fuel system | Denso common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 15.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single fixed‑geometry turbo (Garrett) | |
Timing system | Chain‑driven | |
Oil type | Renault RN0700 (SAE 5W‑30) | |
Dry weight | 110 kg |
The Renault K9K 826 was used across Renault's B/C platform vehicles with transverse mounting. This engine received minor ECU mapping adaptations for the Twingo III versus the Clio IV, creating software interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The K9K 826 is mechanically simple and generally reliable if maintained correctly. Its main weakness is the high-pressure fuel pump, especially in pre-2015 models. Using high-quality EN 590 diesel and adhering strictly to service schedules with RN0700 oil significantly improves longevity. DPF-equipped models require occasional highway driving.
The most frequent issues are high-pressure fuel pump failure (particularly pre-2015), DPF regeneration problems due to short trips, EGR valve sticking from carbon buildup, and glow plug relay failures. These are well-documented in Renault service bulletins like MEC-12-008.
The K9K 826 1.5 dCi 68 engine was used in the Renault Twingo III (2014-2018) and Clio IV (2012-2016). It was specifically designed as an entry-level diesel option for these superminis, producing a consistent 68 PS output.
Modest power gains are possible via ECU remapping, potentially reaching 80-85 PS. However, the engine's fixed-geometry turbo and focus on economy mean significant tuning is not advisable. Aggressive maps can overstress the fuel pump and increase the risk of DPF/EGR issues. Supporting modifications are generally unnecessary for mild tunes.
Excellent for city use. In a Renault Twingo III, expect around 4.2 L/100km (67 mpg UK) on a combined cycle. Real-world figures: 5.0-5.5 L/100km (51-56 mpg UK) in city driving and 3.8-4.2 L/100km (67-74 mpg UK) on highways. DPF regeneration cycles may temporarily increase consumption.
Yes. The K9K 826 is an interference engine. If the timing chain were to fail (an extremely rare occurrence on this engine), the pistons would collide with the open valves, causing catastrophic internal damage. The chain is very robust with proper maintenance.
Renault mandates RN0700 specification oil, typically SAE 5W-30. This low-SAPS (Sulphated Ash, Phosphorus, Sulphur) oil is essential for protecting the EGR system and DPF from clogging. Using the wrong oil will accelerate component wear and failure.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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