The Dacia K9K 802 is a 1,461 cc, inline — four, naturally aspirated diesel engine produced between 2005 and 2018. Developed by Renault, it was widely used across Dacia's cost — effective vehicle lineup to deliver improved fuel economy and torque over petrol equivalents. Featuring a single overhead camshaft (SOHC), 8 — valve design, and common rail direct injection (CRDi), it produces 50 kW (68 PS) and 160 Nm of torque at 2,250 rpm, making it suitable for urban and light — duty a…
Production years 2005–2010 meet Euro 4 standards; 2011–2018 models meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/6789).
The Dacia K9K 802 is a 1,461 cc inline-four, naturally aspirated diesel engine engineered for budget passenger vehicles (2005–2018). It combines common rail direct injection with SOHC valvetrain technology to deliver efficient, low-RPM torque for daily driving. Designed to meet Euro 4 and Euro 5 emissions standards, it prioritizes fuel economy, mechanical robustness, and ease of service.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel (Ultra-low sulfur, EN 590) | |
Configuration | Inline-4, SOHC, 8-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 76.0 mm × 80.5 mm | |
Power output | 50 kW (68 PS) @ 4,000 rpm | |
Torque | 160 Nm @ 2,250 rpm | |
Fuel system | Common rail direct injection (CRDi, up to 1,600 bar) | |
Emissions standard | Euro 4 (pre-2011); Euro 5 (2011–2018) | |
Compression ratio | 17.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Timing belt (renew every 120,000 km) | |
Oil type | SAE 5W-30 (ACEA B4 or C3) | |
Dry weight | 122 kg |
The Dacia K9K 802 was used across Dacia's Logan/Sandero platforms with longitudinal mounting and shared with Renault for regional applications. This engine received platform-specific adaptations-shorter accessory belts in the Logan and revised exhaust manifolds in the Logan MCV-and from 2010, updated fuel system components improved HPFP reliability. All adaptations are documented in OEM technical bulletins.
The K9K 802's primary reliability risk is high-pressure fuel pump (HPFP) failure, with elevated incidence in markets with poor diesel quality. Renault internal field reports from 2012 indicated a significant share of pre-2010 engines required pump replacement before 100,000 km, while VCA MOT data links a notable portion of emissions failures to EGR/DPF clogging in high-mileage units. Extended service intervals and non-ULSD fuel increase mechanical and fuel system stress, making scheduled maintenance and fuel quality adherence critical.
Analysis derived from Renault technical bulletins (2005-2018) and UK DVSA failure statistics (2010-2022). 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
Yes, the K9K 802 is generally reliable when maintained properly. Its simple SOHC design and proven CRDi system contribute to longevity. However, pre-2010 models are prone to HPFP failure if low-quality diesel is used. Regular fuel filter changes, timely timing belt replacement (every 120,000 km), and use of EN 590 ULSD significantly improve long-term durability.
The most common issues are high-pressure fuel pump failure due to poor fuel quality, timing belt failure from missed service intervals, EGR/DPF clogging from short trips, and exhaust manifold cracking. These are documented in Renault service bulletins and are largely preventable with proper maintenance and use of OEM-specified parts and fuel.
The K9K 802 was used in the Dacia Logan (2005–2012), Dacia Sandero (2008–2018), and Dacia Logan MCV (2006–2013). It was also used in the Renault Clio III (2005–2008) as part of the shared platform strategy. All models feature the 1.5 dCi diesel variant.
Limited tuning potential exists. Basic improvements include ECU remapping, which can gain +10–15 PS, and performance air filters. However, the naturally aspirated design and modest compression limit gains. Forced induction is not feasible without major modifications. Most owners prioritize fuel economy and reliability over performance.
Fuel economy is excellent. In a Dacia Sandero, expect ~5.2 L/100km in city driving and ~4.1 L/100km on highways, averaging 4.5–4.8 L/100km (59–62 mpg UK) in mixed conditions. Driving style and fuel quality significantly affect real-world consumption.
Yes, the K9K 802 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 replacement interval essential. Always replace the belt, tensioner, and associated components together.
The engine requires SAE 5W-30 engine oil meeting ACEA B4 or C3 specifications. Low-SAPS oils are recommended for DPF-equipped models. Change oil every 30,000 km or annually. Using the correct oil ensures proper lubrication, especially for the high-pressure fuel system.
Comprehensive technical documentation and regulatory references
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DACIA Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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
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