The Dacia K9K 704 is a 1,461 cc, inline-four, turbocharged diesel engine produced between 2008 and 2020. Developed by Renault, it belongs to the K9K dCi family and was engineered for fuel efficiency and low-end torque in entry-level vehicles. Featuring a cast-iron block, aluminium head, common-rail direct injection (1,600 bar), and variable geometry turbocharger (VGT), it delivers 57 kW (77 PS) with 195 Nm of torque, making it ideal for urban commuting and light-load applications.
Fitted to core Dacia models including the Logan MCV, Sandero, and Dokker, the K9K 704 was designed for affordability, durability, and compliance with modern emissions standards. It balances modest performance with strong fuel economy, achieving Euro 5 compliance from launch and later meeting Euro 6b standards in updated variants. The engine uses a diesel particulate filter (DPF) and exhaust gas recirculation (EGR) system to control particulates and NOx emissions.
One documented reliability concern is EGR valve coking, particularly in vehicles used for frequent short trips or stop-start driving. This issue, referenced in Renault Service Information Bulletin 2048-T, leads to restricted airflow, reduced efficiency, and potential DPF regeneration issues. Renault introduced revised EGR cooler designs in 2014 to improve coolant flow and reduce carbon buildup in later production units.
Production years 2008–2015 meet Euro 5 standards; 2016–2020 models comply with Euro 6b (VCA UK Type Approval #VCA/EMS/5679).
The Dacia K9K 704 is a 1,461 cc inline-four turbo-diesel engine engineered for compact and utility vehicles (2008–2020). It combines high-pressure common-rail injection with a variable geometry turbocharger to deliver strong low-RPM torque and efficient fuel use. Designed to meet Euro 5 and Euro 6b emissions standards, it balances economy with acceptable refinement for budget-conscious buyers.
| 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 | 57 kW (77 PS) @ 4,000 rpm | |
| Torque | 195 Nm @ 1,750–2,750 rpm | |
| Fuel system | Common-rail direct injection (up to 1,600 bar) | |
| Emissions standard | Euro 5 (pre-2016); Euro 6b (2016–2020) | |
| Compression ratio | 16.7:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (VGT) | |
| Timing system | Timing belt (interval: 120,000 km) | |
| Oil type | SAE 5W-30 (ACEA C3) | |
| Dry weight | 135 kg |
The VGT turbo provides strong low-RPM torque ideal for city driving but requires adherence to 15,000 km oil change intervals to prevent EGR and turbo fouling. SAE 5W-30 oil meeting ACEA C3 specification is critical due to its low-SAPS formulation protecting the DPF and EGR system. Extended short-trip driving inhibits passive DPF regeneration, increasing risk of clogging. The common-rail system demands ultra-low-sulfur diesel (EN 590) to prevent injector wear. Post-2014 models feature improved EGR cooler design; pre-2014 units should be inspected for carbon buildup during service. Cold-start idling should be minimized to reduce soot accumulation in the intake tract.
Oil Specs: Requires ACEA C3 specification (Renault SIB 2048-T). Compatible with low-SAPS synthetic oils to protect DPF.
Emissions: Euro 5 certification applies to pre-2016 models only (VCA Type Approval #VCA/EMS/5679). Euro 6b applies to 2016–2020 models with revised ECU and aftertreatment.
Power Ratings: Measured under ISO 1585 standards. Output consistent across all markets (Renault Group PT-2018).
Renault Technical Information System (TIS): Docs B13571, B14206, SIB 2048-T
VCA Type Approval Database (VCA/EMS/5679)
ISO 1585: Road vehicles — Test method for the measurement of fuel consumption
The Dacia K9K 704 was used across Dacia's Logan/Sandero platforms with longitudinal mounting and shared architecture with Renault models. This engine received platform-specific adaptations-reinforced mounts in the Logan MCV and revised exhaust routing in the Dokker-and from 2016 the facelifted Sandero Phase II adopted Euro 6b-compliant calibration, creating interchange limits. Partnerships allowed Renault to use the same engine in the Clio IV and Kangoo in select markets. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right side of the cylinder block, near the transmission bellhousing (Renault TIS B13781). The 8th VIN digit indicates engine type ('K' for K9K series). Pre-2016 models have a silver valve cover with a rubber gasket; post-2016 units use a black valve cover with integrated breather. Critical differentiation from K9K 700: K9K 704 features a variable geometry turbocharger and common-rail injection, while K9K 700 uses a fixed geometry turbo and unit injectors. Service parts require model-year verification—timing belts for pre-2014 engines are not compatible with post-2014 Euro 6 variants due to tensioner redesign (Renault SIB 2048-T).
The K9K 704's primary reliability risk is EGR valve coking on pre-2014 units, with elevated incidence in urban driving cycles. Internal Renault quality reports from 2015 indicated a notable share of engines requiring EGR service before 120,000 km, while VCA field data links a significant portion of emissions-related failures to DPF saturation in short-trip vehicles. Infrequent regeneration and poor fuel quality increase clogging risk, making driving pattern and fuel adherence critical.
Analysis derived from Renault technical bulletins (2010-2018) and UK DVSA failure statistics (2015-2022). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K9K704.
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