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…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The K9K 856 is generally robust when maintained properly. Early models (2014–2017) had high-pressure fuel pump concerns if fuel levels were consistently low. Post-2018 revisions improved pump durability. Regular servicing, timely belt changes, and using correct oil (5W-30/40 RN0700) are essential for long-term reliability.
The main issues are high-pressure fuel pump wear, turbo actuator sticking, EGR and intake carbon buildup, and oil leaks from gaskets. These are documented in Renault service bulletins. Preventative maintenance significantly reduces failure rates.
The K9K 856 was used in the second-generation Sandero (2014–2020), Logan MCV (2014–2022), and second-generation Duster (2018–2022). It was also shared with Renault Clio IV and Kangoo. Euro 5b applied pre-2017; Euro 6d-TEMP for later models.
Limited tuning potential exists. ECU remaps can achieve +10–15 kW safely, but gains are modest due to small turbo and EGR constraints. Supporting mods like intercooler upgrade are rare. Most owners prioritize reliability over performance.
Excellent for its class. In a Dacia Sandero, expect ~4.3 L/100km (city) and ~3.6 L/100km (highway), or about 65 mpg UK combined. Real-world mixed driving typically yields 58–68 mpg (UK), making it highly economical.
Yes. The K9K 856 is an interference engine. If the timing belt fails, pistons contact open valves, causing severe internal damage. Immediate belt replacement at 120,000 km or 6 years is critical, even if mileage is low.
Renault specifies 5W-30 or 5W-40 oil meeting RN0700 or RN0710 standards. Use high-quality synthetic diesel-rated oil and change every 15,000 km or annually. Proper oil prevents turbo, injector, and timing system wear.
Comprehensive technical documentation and regulatory references
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