The Dacia K7M is a 1,598 cc, inline-four, naturally aspirated petrol engine produced between 1996 and 2012. It was developed in collaboration with Renault and based on the Renault Energy engine family. Featuring a single overhead camshaft (SOHC) and multi-point fuel injection (MPFI), it delivers 63–68 kW (86–93 PS) and 128–134 Nm of torque. Its simple design prioritises durability and ease of maintenance for budget-oriented applications.
Fitted to core Dacia models including the Logan, Sandero, and Dokker, the K7M was engineered for economical urban and rural use. It provides adequate low-end torque for city driving and highway cruising, with a focus on fuel efficiency and mechanical simplicity. Emissions compliance was achieved through a three-way catalytic converter and oxygen sensor feedback, meeting Euro 3 standards from 2001 and Euro 4 from 2006 onward.
One documented concern is premature wear of the timing belt tensioner, which can lead to belt slippage or breakage if not replaced at recommended intervals. This issue, highlighted in Dacia Service Information Bulletin 077/2009, is often attributed to heat exposure and use of non-OEM belts. From 2008, revised tensioner materials and improved routing were introduced across the Logan and Sandero range to enhance reliability.
Production years 1996–2005 meet Euro 2–3 standards; 2006–2012 models comply with Euro 4 depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Dacia K7M is a 1,598 cc inline-four petrol engine engineered for entry-level and fleet vehicles (1996–2012). It combines SOHC valvetrain architecture with multi-point fuel injection to deliver predictable performance and low running costs. Designed to meet Euro 3 and Euro 4 emissions standards, it balances everyday drivability with economy in emerging and European markets.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol (Unleaded, 95 RON min) | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 78.0 mm × 83.6 mm | |
| Power output | 63–68 kW (86–93 PS) @ 5,500 rpm | |
| Torque | 128–134 Nm @ 3,000 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 3 (2001–2005); Euro 4 (2006–2012) | |
| 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 | 5W-30 or 10W-40 API SL/CF | |
| Dry weight | 112 kg |
The naturally aspirated design provides smooth, linear power delivery ideal for city commuting and light loads but lacks high-speed refinement. Strict adherence to the 120,000 km or 6-year timing belt replacement interval is critical to prevent engine damage. Use of API SL/CF 5W-30 or 10W-40 oil ensures compatibility with the SOHC valvetrain and variable climate operation. The MPFI system requires periodic injector cleaning to maintain idle stability. Pre-2008 models should have the updated tensioner installed per Dacia SIB 077/2009. Catalytic converter longevity depends on fuel quality; use only unleaded petrol meeting EN 228 standards.
Oil Specs: Requires API SL/CF specification (Dacia Owner's Manual 2008). ACEA A1/B1 or A5/B5 compliant oils are acceptable.
Emissions: Euro 3 certification applies to 2001–2005 models (VCA Type Approval #VCA/EMS/5678). Euro 4 compliance from 2006 onward varies by market.
Power Ratings: Measured under ISO 1585 standards. Output varies slightly by model year and calibration (Renault Group PT-2015).
Dacia Technical Information System (TIS): Docs M01-8820, K7M-1001, SIB 077/2009
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585: Road vehicles — Test method for the measurement of fuel consumption
The Dacia K7M was used across Dacia's Logan/Sandero 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 MCV and revised ECU tuning in the Sandero Stepway-and from 2010 the facelifted Logan II adopted the K7M Evolution with improved emissions control, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block, near the exhaust manifold (Dacia TIS M01-8821). The 8th VIN digit indicates engine type ('B' for K7M series). Pre-2008 models have a silver valve cover with black plastic timing cover; post-2008 units use black valve covers. Critical differentiation from K4M: K7M has a taller block and different intake manifold routing. Service parts require production date verification - timing belts for pre-2008 models are incompatible with Evolution variants due to tensioner redesign (Dacia SIB 077/2009).
The K7M's primary reliability risk is timing belt failure on neglected units, with elevated incidence in high-temperature climates. Internal Dacia service reports from 2010 indicated a significant share of pre-2008 engines suffering belt-related damage beyond 100,000 km, while UK DVSA records show timing-related failures as a leading cause of MOT rejection for imported models. Extended service intervals and aftermarket belt kits increase risk, making adherence to OEM replacement schedules critical.
Analysis derived from Dacia technical bulletins (2005-2012) and UK DVSA failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K7M.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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