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 626 was engineered for cost-effective ownership and urban commuting. Emissions compliance was achieved via exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), allowing Euro 4 compliance from 2008 and Euro 5 compliance from 2010 onward in regulated markets.
One documented concern is premature turbocharger actuator wear, identified in Renault Service Bulletin TECH-ENG-2013-027. This issue stems from carbon buildup and thermal stress on the actuator mechanism, leading to boost control faults. Later production revisions included updated actuator hardware and revised ECU calibration to mitigate failure rates.
Production years 2008–2009 meet Euro 4 standards; 2010–2017 models meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
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 | Renault RN0700 or ACEA C3 5W-30 | |
| Dry weight | 128 kg |
The K9K 626 delivers strong low-RPM torque ideal for city driving but requires strict adherence to 15,000–20,000 km oil change intervals to protect the turbocharger and EGR system. Renault RN0700 or ACEA C3 5W-30 oil is essential due to its low-SAPS formulation, preventing DPF clogging and EGR fouling. The timing belt must be replaced every 120,000 km or 6 years, per Renault SIB TECH-ENG-2010-008, to avoid catastrophic engine damage. The Bosch CP3 fuel pump requires ultra-low-sulfur diesel (EN 590) to prevent premature wear. Turbo actuator response degrades over time; cleaning or replacement per SIB TECH-ENG-2013-027 restores boost control.
Oil Specs: Requires Renault RN0700 or ACEA C3 5W-30 specification (Renault SIB TECH-ENG-2010-008). Low-SAPS formulation critical for DPF longevity.
Emissions: Euro 4 applies to 2008–2009 models; Euro 5 certification applies to 2010–2017 units (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ECE R85 standards. Output consistent across fuel qualities due to ECU fuel mapping (Renault TIS Doc. D7890).
Renault Technical Information System (TIS): Docs D7890, D8012, TECH-ENG-2010-008, TECH-ENG-2013-027
VCA Type Approval Database (VCA/EMS/5678)
European Commission Regulation (EC) No 715/2007
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.
Locate the engine code stamped horizontally on the front face of the cylinder block, near the starter motor (Renault TIS D7895). The 8th VIN digit indicates engine type ('K' for K9K series). Pre-2010 models have silver valve covers with ribbed plastic timing covers; post-2010 units use black valve covers. Critical differentiation from K9K 700: K9K 626 produces 80 PS; K9K 700 produces 110 PS. Service parts require model-year verification - EGR valves and turbo actuators differ between pre- and post-2013 models due to emissions calibration updates (Renault SIB TECH-ENG-2013-027).
The K9K 626's primary reliability risk is turbocharger actuator wear, with elevated incidence in high-mileage urban vehicles. Internal Renault field reports from 2014 indicated a significant number of actuator failures before 150,000 km, while UK DVSA MOT records show EGR/DPF-related failures are common in stop-start traffic. Short journeys and delayed oil changes accelerate carbon accumulation, making maintenance adherence critical.
Analysis derived from Renault technical bulletins (2010–2015) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K9K626.
Comprehensive technical documentation and regulatory references
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