The Dacia K4M 704 is a 1,598 cc, inline-four, naturally aspirated petrol engine produced between 2005 and 2012. It belongs to the Renault-Nissan K4M family, designed for durability and cost-effective ownership. Featuring a cast-iron block, aluminium head, and multi-point fuel injection (MPi), it delivers 81 kW (110 PS) and 148 Nm of torque. Its DOHC 16-valve configuration enables higher-revving performance and improved breathing over 8-valve variants.
Fitted to models such as the Dacia Logan, Sandero, and Symbol, the K4M 704 was engineered for balanced performance and fuel economy in emerging markets. Its driving character is smooth and responsive, with strong mid-range power suitable for highway use. Emissions compliance was achieved via a three-way catalytic converter and closed-loop lambda control, allowing Euro 4 compliance from 2005 and Euro 5 from 2009, verified under EU Regulation (EC) No 715/2007.
One documented concern is timing belt failure due to extended service intervals, highlighted in Renault Service Information Bulletin TIS-ENG-0112 (2008). This results from the engine's interference design and inadequate maintenance adherence. From 2007, revised tensioner assemblies were introduced to reduce premature wear in later production runs.
Production years 2005–2008 meet Euro 4 standards; 2009–2012 models comply with Euro 5 (VCA UK Type Approval #VCA/EMS/5676).
The Dacia K4M 704 is a 1,598 cc inline-four petrol engine engineered for compact and utility models (2005–2012). It combines multi-point fuel injection with a robust cast-iron block and DOHC 16-valve head, delivering responsive performance. Designed to meet Euro 5 standards, it balances reliability with improved emissions and efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol (Unleaded, 95 RON) | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 78.0 mm × 83.6 mm | |
| Power output | 81 kW (110 PS) @ 5,750 rpm | |
| Torque | 148 Nm @ 3,750 rpm | |
| Fuel system | Multi-point fuel injection (MPi) | |
| Emissions standard | Euro 4 (2005–2008); Euro 5 (2009–2012) | |
| Compression ratio | 10.6:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (renew every 120,000 km) | |
| Oil type | SAE 5W-30 or 10W-40 (ACEA A1/B1 or A5/B5) | |
| Dry weight | 120 kg |
The DOHC 16-valve design provides improved high-RPM performance ideal for highway driving but requires strict adherence to 120,000 km timing belt replacement intervals to prevent catastrophic engine damage. SAE 5W-30 or 10W-40 oil meeting ACEA A1/B1 or A5/B5 is sufficient for most climates. The MPi system is reliable but benefits from periodic fuel system cleaning. Post-2007 engines show improved timing belt durability due to revised tensioner design; pre-2007 units should be monitored for wear, especially if service history is unknown.
Oil Specs: Requires ACEA A1/B1 or A5/B5 specification (Renault SIB TIS-ENG-0112). BMW Longlife or MB-Approval oils are not required.
Emissions: Euro 5 certification applies to 2009 and later models only (VCA Type Approval #VCA/EMS/5676). Market-specific variants may differ.
Power Ratings: Measured under ECE R85 standards. Output consistent across fuel grades 95–98 RON (Renault TIS Doc. K4M-POWER-08).
Renault Technical Information System (TIS): Docs K4M-TECH-001, TIS-ENG-0112
VCA Type Approval Database (VCA/EMS/5676)
UNECE Regulation No. 85 (ECE R85)
The Dacia K4M 704 was used across Dacia's Logan, Sandero, and Symbol platforms with transverse mounting and shared with Renault in European applications. This engine received platform-specific adaptations-shorter intake manifolds in the Sandero and revised engine mounts in the Logan-and from 2007 the facelifted Logan I adopted a revised timing belt tensioner to reduce premature wear, creating service part differences. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front of the cylinder block, below the exhaust manifold (Renault TIS K4M-ID-01). The 8th VIN digit indicates engine type ('G' for K4M 704). Pre-2007 models have silver valve covers; post-2007 units use black valve covers. Critical differentiation from K4M 696: K4M 704 produces 110 PS (81 kW), while K4M 696 produces 102 PS (75 kW). Service parts require production date verification—timing belts and tensioners for pre-2007 engines are not compatible with post-2007 revisions due to updated tensioner design (Renault SIB TIS-ENG-0112).
The K4M 704's primary reliability risk is timing belt failure in neglected engines, with elevated incidence in vehicles with incomplete service history. Renault field reports from 2010 indicated over 20% of high-mileage units suffered belt-related damage, while VCA MOT data links misfires and no-start conditions to failed timing systems. Extended oil intervals and high ambient temperatures increase belt degradation, making proactive replacement critical.
Analysis derived from Renault technical bulletins (2005-2012) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K4M704.
Comprehensive technical documentation and regulatory references
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DACIA Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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