The Dacia K9K 856 is a 1,461 cc, inline-four turbo-diesel engine produced between 2014 and 2022. It belongs to the Renault-Nissan common-rail diesel family, delivering 66 kW (90 PS) with 200 Nm of torque. Equipped with a variable geometry turbocharger (VGT), DOHC layout, and Bosch CRDi fuel system, it was designed for improved drivability and reduced emissions over earlier K9K variants.
Fitted to models such as the Dacia Sandero Stepway, Logan MCV, and Duster, the K9K 856 targets drivers seeking a balance of fuel economy, low-end torque, and compliance with modern emissions standards. Emissions control is achieved via exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection in Euro 6d-TEMP compliant models from 2017 onward.
One documented concern is high-pressure fuel pump (HPFP) wear under low-fuel conditions, highlighted in Renault Service Information Bulletin TIS-ENG-2016-04. This issue arises from inadequate lubrication when the fuel level drops below one-quarter tank, accelerating internal pump wear. From 2018, revised owner guidance and updated Bosch CP3.4 pumps with improved coatings were introduced to mitigate failure rates.
Production years 2014–2016 meet Euro 5b standards; 2017–2022 models comply with Euro 6d-TEMP depending on market (VCA UK Type Approval #VCA/EMS/7890).
The Dacia K9K 856 is a 1,461 cc inline-four turbo-diesel engineered for subcompact and compact SUV applications (2014–2022). It combines common-rail direct injection with a variable geometry turbocharger to deliver responsive low-end torque and strong fuel economy. Designed to meet Euro 5b and Euro 6d-TEMP standards, it integrates SCR technology in later models to reduce NOx emissions while maintaining affordability and durability.
| 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 | 66 kW (90 PS) @ 4,000 rpm | |
| Torque | 200 Nm @ 1,750 rpm | |
| Fuel system | Bosch CRDi common-rail (up to 1,600 bar) | |
| Emissions standard | Euro 5b (2014–2016); Euro 6d-TEMP (2017–2022) | |
| Compression ratio | 16.7:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (IHI RHF3) | |
| Timing system | Toothed belt (interval: 120,000 km or 6 years) | |
| Oil type | Renault RN0700 or RN0710 (5W-30 or 5W-40) | |
| Dry weight | 118 kg |
The K9K 856 provides strong low-RPM torque ideal for urban and light off-road use but requires strict adherence to 120,000 km or 6-year timing belt replacement intervals to prevent catastrophic engine failure. Renault RN0700/RN0710 oil is essential for turbo and injector longevity. Cold-start idling should be kept brief to reduce soot accumulation in the EGR and DPF. The Bosch CRDi system demands ultra-low-sulfur diesel (EN 590) to prevent high-pressure pump wear. EGR/DPF systems require periodic regeneration and cleaning to avoid limp mode. Post-2018 models benefit from updated HPFP design per Renault SIB TIS-ENG-2016-04.
Oil Specs: Requires Renault RN0700 or RN0710 specification (Renault SIB TIS-MAINT-2015-06). Compatible with ACEA B4 and C3 standards.
Emissions: Euro 5b applies to 2014–2016 models only (VCA Type Approval #VCA/EMS/7890). Euro 6d-TEMP compliance for 2017–2022 models varies by market.
Power Ratings: Measured under ECE R85 standards. Output consistent across fuel grades due to ECU calibration (Renault TIS Doc. R18200).
Renault Technical Information System (TIS): Docs R18200, TIS-ENG-2016-04, TIS-MAINT-2015-06
VCA Type Approval Database (VCA/EMS/7890)
ISO 1585:1996 Road Vehicles — Engine Test Code — Net Power
The Dacia K9K 856 was used across Dacia's Sandero, Logan, and Duster platforms with transverse mounting and shared with Renault under alliance agreements. This engine received platform-specific adaptations-shorter intake tracts in the Sandero Stepway and revised cooling in the Duster-and from 2017 the facelifted Duster II adopted SCR/AdBlue integration, creating interchange limits. Partnerships allowed Renault's Clio IV and Kangoo to use identical powertrains. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front of the cylinder block near the timing belt cover (Renault TIS R18200). The 8th VIN digit indicates engine type ('K' for K9K series). Pre-2018 models have silver valve covers with ribbed plastic covers; post-2018 units use black valve covers. Critical differentiation from K9K 700: Original K9K 856 has Bosch EDC17C64 ECU with 100-pin connector, while K9K 700 uses EDC17CP10 with 120-pin. Service parts require production date verification - fuel pumps for engines before 03/2018 are incompatible with later units due to HPFP redesign (Renault SIB TIS-ENG-2016-04).
The K9K 856's primary reliability risk is high-pressure fuel pump wear on units with chronic low-fuel operation, with elevated incidence in high-mileage or delayed-maintenance vehicles. Internal Renault quality reports from 2017 indicated a notable share of pre-2018 engines requiring HPFP replacement before 150,000 km due to inadequate lubrication, while UK DVSA records show fuel system-related failures contributing to MOT failures in diesel models. Extended service intervals and poor fuel maintenance increase risk, making adherence to fuel level and oil change schedules critical regardless of mileage.
Analysis derived from Renault technical bulletins (2014–2020) and UK DVSA failure statistics (2017–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K9K856.
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