The Dacia K9K 800 is a 1,461 cc, inline — four, turbocharged diesel engine produced between 2004 and 2020. Developed by Renault, it belongs to the K9K dCi family and features common — rail direct injection, a variable geometry turbocharger (VGT), and DOHC 16 — valve configuration. In standard tune it delivers 50 kW (68 PS), with torque output of 160 Nm at 1,900 rpm, offering strong low — end pull ideal for urban and rural use.
Fitted to core models such as the Dacia Logan, Sandero,…
Production years 2004–2010 meet Euro 4 standards; 2011–2020 models comply with Euro 5 .
The Dacia K9K 800 is a 1,461 cc inline-four turbo-diesel engine engineered for compact and subcompact applications (2004–2020). It combines common-rail direct injection with a variable geometry turbocharger to deliver strong low-RPM torque and efficient fuel economy. Designed to meet Euro 4 and Euro 5 emissions standards, it balances durability with urban drivability.
| 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 | 50 kW (68 PS) @ 4,000 rpm | |
Torque | 160 Nm @ 1,900 rpm | |
Fuel system | Bosch CRS 2-16 common-rail (up to 1,600 bar) | |
Emissions standard | Euro 4 (2004–2010); Euro 5 (2011–2020) | |
Compression ratio | 16.7:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (IHI RHF3 VGT) | |
Timing system | Timing belt (interval: 120,000 km) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 135 kg |
The Dacia K9K 800 was used across Dacia's Logan/Sandero platforms with longitudinal mounting and shared with Renault in certain European and emerging markets. This engine received platform-specific adaptations-shorter intake manifolds in the Sandero and reinforced engine mounts in the Duster-and from 2010 the facelifted Logan II adopted revised ECU mapping for improved idle stability and DPF regeneration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The K9K 800's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in regions with poor diesel quality. Renault field reports from 2006–2012 noted a significant number of pre-2010 units requiring HPFP replacement before 100,000 km, while VCA MOT data shows EGR/DPF faults as a leading cause of emissions failures in older Dacias. Extended intervals and non-ULSD fuel increase injector and pump stress, making fuel system maintenance critical.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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Yes, the K9K 800 is fundamentally reliable when properly maintained. Its simple design and robust construction suit high-mileage use in moderate conditions. However, pre-2010 models are prone to HPFP failure if poor-quality diesel is used. Regular timing belt changes, DPF maintenance, and use of quality oil (5W-30 ACEA C3) ensure longevity beyond 250,000 km.
The most common issues are high-pressure fuel pump failure (especially in pre-2010 models), EGR valve clogging, DPF saturation due to short trips, and timing belt failure from overdue replacement. These are documented in Renault service bulletins and field reports from non-ULSD markets.
The K9K 800 was used in the Dacia Logan (2004–2020), Sandero (2008–2020), and Duster (2010–2017). It was also shared with the Renault Clio III (2005–2012) in select markets. All variants are 1.5L dCi producing 68 PS, with Euro 4 or Euro 5 compliance depending on model year.
Limited tuning potential exists. Basic improvements include ECU remap, performance air filter, and exhaust upgrade, potentially gaining +15–20 PS. However, the stock turbo and fuel system limit gains. For significant power, engine swaps (e.g., K9K 110) are more viable than extensive modifications to the K9K 800.
In the Dacia Sandero, the K9K 800 averages 4.8–5.5 L/100km (59–51 mpg UK) in mixed driving. Highway consumption drops to ~4.2 L/100km (~67 mpg UK), while city driving may reach 6.0 L/100km (~47 mpg UK). Real-world efficiency depends on driving style and maintenance condition.
Yes. The K9K 800 is an interference engine. If the timing belt breaks or jumps, the pistons can collide with open valves, causing bent valves or piston damage. This makes strict adherence to the 120,000 km belt replacement interval essential to avoid catastrophic engine failure.
The K9K 800 requires SAE 5W-30 engine oil meeting ACEA C3 or Renault RN0700 specifications. Low-ash formulations are critical for DPF protection. Change intervals should not exceed 15,000 km or annual use, whichever comes first, to ensure optimal fuel system and turbo longevity.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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
Type-approval guidance and documentation.
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