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 ap…
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 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.
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.
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The K9K 704 is mechanically robust and fuel-efficient when maintained. Pre-2014 engines are prone to EGR coking if used for frequent short trips. Post-2014 revisions improved EGR cooler design. Timing belt replacement at 120,000 km is critical. With proper oil changes and driving patterns that allow DPF regeneration, these engines regularly exceed 250,000 km.
Key issues include EGR valve coking (especially pre-2014), DPF saturation due to short trips, timing belt failure if overdue, and carbon buildup in the intake. These are documented in Renault service bulletins. Oil leaks from the valve cover gasket are also common on high-mileage units.
The K9K 704 was used in the Dacia Logan MCV (2008–2015), Sandero (2013–2020), and Dokker (2012–2020). It was also used by Renault in the Clio IV and Kangoo. All variants are 1.5L dCi producing 77 PS. Euro 5 and Euro 6b versions differ in ECU and aftertreatment hardware.
Limited tuning potential exists. ECU remaps can yield +15–20 PS safely due to conservative factory calibration. Performance upgrades like upgraded intercooler or exhaust offer marginal gains. However, the engine's design prioritizes economy and durability over performance, so major tuning is uncommon and may affect DPF/EGR function.
In a Sandero or Dokker, fuel economy averages 4.5–5.2 L/100km (62–54 mpg UK) in mixed driving. Highway efficiency improves to ~4.0 L/100km (70 mpg UK). Real-world figures depend on load and terrain, but it remains one of the most economical diesel engines in its class.
Yes. The K9K 704 is an interference engine. If the timing belt breaks or jumps, the pistons can strike the open valves, causing severe internal damage. Adhering to the 120,000 km belt replacement interval is essential to prevent costly repairs.
Renault specifies SAE 5W-30 oil meeting ACEA C3 standards. Low-SAPS synthetic oil is required to protect the DPF and EGR system. Change intervals should not exceed 15,000 km or 12 months. Proper oil choice reduces coking and maintains aftertreatment longevity.
Comprehensive technical documentation and regulatory references
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