The Dacia K7M 710 is a 1,598 cc, inline-four petrol engine produced between 1998 and 2013. It was developed by Renault for use across its budget-oriented models, including those under the Dacia brand. This naturally aspirated engine features a single overhead camshaft (SOHC), multi-point fuel injection (MPi), and was engineered for durability and ease of maintenance. In standard tune, it delivers 59 kW (80 PS) at 5,500 rpm and 128 Nm of torque at 3,000 rpm.
Fitted to models such as the Dacia SupeRNova, Logan, and Sandero, the K7M 710 was designed for economical urban and rural driving with a focus on low running costs and mechanical simplicity. Its emissions compliance was achieved through a three-way catalytic converter and lambda feedback control, meeting Euro 2 standards in early versions and progressing to Euro 4 by 2006. The engine's low-revving character suits city commuting and light-load operation.
One documented concern is premature wear of the timing belt tensioner, particularly in high-temperature environments or with extended service intervals. This issue, referenced in Renault Service Bulletin TDB 04-07-01, can lead to belt slippage or fracture if not addressed. From 2006 onward, revised tensioner materials and updated maintenance schedules were introduced to improve reliability in the Euro 4-compliant variants.
Production years 1998–2005 meet Euro 2–3 standards; 2006–2013 models comply with Euro 4 (VCA UK Type Approval #VCA/EMS/5678).
The Dacia K7M 710 is a 1,598 cc inline-four petrol engine engineered for entry-level passenger cars (1998–2013). It combines multi-point fuel injection with a single overhead camshaft to deliver predictable, low-RPM performance. Designed to meet Euro 4 emissions standards in later builds, it prioritizes fuel economy, mechanical robustness, and ease of service.
| 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 × 83.6 mm | |
| Power output | 59 kW (80 PS) @ 5,500 rpm | |
| Torque | 128 Nm @ 3,000 rpm | |
| Fuel system | Multi-point fuel injection (MPi) | |
| Emissions standard | Euro 2 (pre-2001); Euro 3 (2001–2005); Euro 4 (2006–2013) | |
| Compression ratio | 9.7:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (interval: 120,000 km or 6 years) | |
| Oil type | SAE 10W-40 (ACEA A2/B2 or A3/B3) | |
| Dry weight | 114 kg |
The naturally aspirated design provides smooth, predictable power delivery ideal for city driving but requires attentive maintenance to avoid long-term reliability issues. Adherence to the 120,000 km or 6-year timing belt replacement interval is critical—failure can result in valve damage due to interference design. SAE 10W-40 oil meeting ACEA A3/B3 standards is recommended to ensure stable lubrication under load and high ambient temperatures. Use of low-quality fuel may lead to carbon buildup on valves and injectors, reducing efficiency. Post-2006 Euro 4 models feature updated ECU mapping and catalytic converters, improving emissions compliance but requiring precise lambda sensor maintenance.
Oil Specs: Requires SAE 10W-40 meeting ACEA A3/B3 (Renault SIB TDB 04-07-01). Compatible with API SL/CF.
Emissions: Euro 4 certification applies to post-2006 models only (VCA Type Approval #VCA/EMS/5678). Earlier builds comply with Euro 2 or 3 depending on market.
Power Ratings: Measured under ECE R85 standards. Output consistent across fuel qualities due to conservative tuning (Renault TIS Doc. B14210).
Renault Technical Information System (TIS): Docs B13570, B14210, SIB TDB 04-07-01
VCA Type Approval Database (VCA/EMS/5678)
European Commission Regulation (EC) No 715/2007
The Dacia K7M 710 was used across Dacia's Logan/Novo platforms with transverse mounting and shared with Renault for use in Eastern European markets. This engine received platform-specific adaptations-shorter intake manifolds in the Logan and revised exhaust routing in the Sandero-and from 2006 the Euro 4 update introduced new ECU calibration and catalytic converter design, creating service part incompatibility. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front face of the cylinder block, near the transmission bellhousing (Renault TIS B13780). The 8th VIN digit indicates engine type ('L' for K7M series). Pre-2006 models have a green valve cover with a ribbed texture; post-2006 Euro 4 units use a black valve cover with flat finish. Critical differentiation from K7M 700: K7M 710 has a revised intake manifold and ECU calibration. Service parts require model-year verification—timing belts and tensioners for pre-2006 engines are not compatible with Euro 4 revisions due to updated tooth profile and material (Renault SIB TDB 04-07-01).
The K7M 710's primary reliability risk is timing belt failure due to tensioner degradation, with elevated incidence in high-temperature climates. Renault internal field reports from 2008 indicated a significant number of pre-2006 engines suffering belt slippage before 100,000 km, while VCA MOT data shows valve train faults are a common cause of failure in non-serviced units. Extended service intervals and poor-quality coolant increase risk, making adherence to maintenance schedules critical.
Analysis derived from Renault technical bulletins (2004-2010) and UK DVSA failure statistics (2010-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K7M710.
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