The Dacia K9K 626 is a 1,461 cc, inline — four, turbo — diesel engine produced between 2008 and 2017. It forms part of the Renault — Nissan Alliance's K9K family, designed for compact and subcompact applications. Featuring common — rail direct injection, a variable geometry turbocharger (VGT), and DOHC valvetrain, it delivers 59 kW (80 PS) and 185 Nm of torque, prioritising fuel economy and low — end drivability.
Fitted to models such as the Sandero, Logan, and Duster, the K9K…
Production years 2008–2009 meet Euro 4 standards; 2010–2017 models meet Euro 5 standards .
The Dacia K9K 626 is a 1,461 cc inline-four turbo-diesel engineered for subcompact and compact models (2008–2017). It combines common-rail direct injection with a single variable-geometry turbocharger to deliver responsive low-end torque and efficient fuel use. Designed to meet Euro 4 and Euro 5 emissions standards, it balances economy with practical performance in entry-level applications.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.0 mm × 80.5 mm | |
Power output | 59 kW (80 PS) @ 4,000 rpm | |
Torque | 185 Nm @ 1,750–2,750 rpm | |
Fuel system | Bosch CRS 2-20 common-rail (up to 1,600 bar) | |
Emissions standard | Euro 4 (2008–2009); Euro 5 (2010–2017) | |
Compression ratio | 16.7:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (Garrett GT1544V) | |
Timing system | Timing belt (interval: 120,000 km or 6 years) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 128 kg |
The Dacia K9K 626 was used across Dacia's Sandero, Logan, and Duster platforms with transverse mounting. This engine received platform-specific adaptations-shortened intake manifolds in the Sandero and revised engine mounts in the Duster-and from 2013 the facelifted Logan MCV adopted updated ECU tuning for improved cold-start performance, creating minor calibration differences. 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 626 is generally robust when maintained properly. Key concerns include turbo actuator wear and EGR clogging, especially in urban environments. Adhering to oil change intervals (15,000–20,000 km) and replacing the timing belt every 120,000 km or 6 years is critical. Engines with full service history and clean DPFs can exceed 250,000 km reliably.
The most frequent issues are turbocharger actuator failure, EGR and intake carbon buildup, timing belt degradation, and DPF clogging. These are documented in Renault service bulletins and are often linked to extended oil intervals or frequent short trips. Regular maintenance significantly reduces failure rates.
The K9K 626 1.5 dCi engine was used in the first-generation Sandero (2008–2012), second-generation Logan (2008–2017), and first-generation Duster (2010–2017). All models meet Euro 4 (pre-2010) or Euro 5 (2010–2017) standards. It is not used in the Jogger or third-generation Sandero.
Yes, the K9K 626 can be tuned via ECU remap, typically gaining +15–25 kW. However, stock turbo and fuel system components limit safe gains. Over-tuning increases risk of turbo failure, EGR stress, and DPF overload. Supporting modifications like upgraded intercooler and exhaust are recommended for higher power levels.
Excellent for its class. In a Duster 1.5 dCi, combined consumption is ~4.5 L/100km (62 mpg UK). City driving averages ~5.5 L/100km (51 mpg), while highway runs can achieve ~4.0 L/100km (70 mpg). Real-world economy typically ranges 45–60 mpg UK depending on driving style and vehicle load.
Yes. The K9K 626 is an interference engine. If the timing belt fails, the pistons can strike the open valves, causing severe internal damage. This makes strict adherence to the 120,000 km or 6-year replacement interval essential. Any signs of belt wear should be addressed immediately.
The engine requires 5W-30 oil meeting Renault RN0700 or ACEA C3 specifications. This low-SAPS oil is critical for protecting the DPF and EGR system. Oil should be changed every 15,000–20,000 km or annually to maintain engine longevity and emissions compliance.
Comprehensive technical documentation and regulatory references
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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
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VCA Certification Portal
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