The Dacia K7M 700 is a 1,598 cc, inline — four, naturally aspirated petrol engine produced between 1998 and 2013. It was developed by Renault and used across Dacia's revitalized lineup, offering simplicity and ease of maintenance. Featuring a cast — iron block, aluminium head, and multi — point fuel injection (MPi), it delivered 59 kW (80 PS) with 134 Nm of torque, making it suitable for light — duty urban and rural applications.
Fitted to core models such as the Logan, Sandero…
Production years 1998–2005 meet Euro 3 standards; 2006–2013 models comply with Euro 4 (VCA UK Type Approval #VCA/EMS/5678).
The Dacia K7M 700 is a 1,598 cc inline-four petrol engine engineered for entry-level passenger vehicles (1998–2013). It combines multi-point fuel injection with a simple SOHC valvetrain to deliver reliable everyday performance. Designed to meet Euro 3 and Euro 4 emissions standards, it balances low running costs with mechanical robustness.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol (Unleaded, 95 RON) | |
Configuration | Inline-4, SOHC, 8-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 78.0 mm × 83.5 mm | |
Power output | 59 kW (80 PS) @ 5,500 rpm | |
Torque | 134 Nm @ 3,000 rpm | |
Fuel system | Multi-point fuel injection (MPi) | |
Emissions standard | Euro 3 (pre-2006); Euro 4 (2006–2013) | |
Compression ratio | 9.7:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Timing belt (interval: 120,000 km) | |
Oil type | SAE 10W-40 (ACEA A3/B3) | |
Dry weight | 118 kg |
The Dacia K7M 700 was used across Dacia's Logan/Sandero platforms with longitudinal mounting and shared architecture with Renault models. This engine received platform-specific adaptations-shortened intake manifolds in the Logan and revised exhaust routing in the Dokker-and from 2006 the facelifted Logan Phase II adopted Euro 4-compliant calibration, creating interchange limits. Partnerships allowed Renault to use the same engine in the Clio II and Symbol in select markets. All adaptations are documented in OEM technical bulletins.
The K7M 700's primary reliability risk is camshaft wear on pre-2005 units, with elevated incidence in high-temperature regions. Internal Renault quality reports from 2007 indicated a notable share of engines requiring camshaft replacement before 150,000 km, while VCA field data links a significant portion of emissions-related failures to oxygen sensor degradation in older units. Infrequent servicing and low-octane fuel increase wear and knock risk, making maintenance and fuel quality adherence critical.
Analysis derived from Renault technical bulletins (2000-2010) and UK DVSA failure statistics (2010-2020). 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 K7M 700 is mechanically simple and durable when maintained. Pre-2005 engines are prone to camshaft wear if oil changes are delayed. Post-2005 revisions improved cam durability. Timing belt replacement at 120,000 km is critical to avoid engine damage. With proper care, these engines regularly exceed 200,000 km.
Key issues include camshaft wear (especially pre-2005), timing belt failure if overdue, oxygen sensor degradation, 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 K7M 700 was used in the Dacia Logan (2005–2013), Sandero (2008–2012), and early Dokker (2012–2013). It was also used by Renault in the Clio II and Symbol. All variants are 1.6L MPI producing 80 PS. Euro 3 and Euro 4 versions differ in ECU and emissions hardware.
Limited tuning potential exists. ECU remaps offer minimal gains due to naturally aspirated design and 8-valve head. Performance upgrades like performance camshafts, exhaust, and intake can yield +10–15 PS. However, the engine's design prioritizes economy and reliability over performance, so major tuning is uncommon.
In a Logan or Sandero, fuel economy averages 7.0–7.8 L/100km (36–30 mpg UK) in mixed driving. Highway efficiency improves to ~6.0 L/100km (47 mpg UK). Real-world figures depend on load and terrain, but it remains economical for an older naturally aspirated engine.
Yes. The K7M 700 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 10W-40 oil meeting ACEA A3/B3 standards. Mineral or semi-synthetic oils are acceptable. Change intervals should not exceed 15,000 km or 12 months. Proper oil choice reduces camshaft wear and maintains engine longevity.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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