The Renault 843 723 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2006 and 2010. It features a common rail direct injection system, a variable geometry turbocharger (VGT), and a dual overhead camshaft (DOHC) with 12 valves. This compact engine, often designated as the K9K, was designed for efficiency and responsive low‑end torque in supermini and city car applications.
Fitted to models such as the Clio III, Modus, and Twingo III, the 843 723 engine was e…
Production years 2006–2010 meet Euro 4 standards .
The Renault 843 723 is a 1,461 cc inline‑three turbo‑diesel engineered for supermini and city cars (2006-2010). It combines common rail direct injection with a variable geometry turbocharger to deliver responsive low‑rpm torque and exceptional fuel efficiency. Designed to meet Euro 4 standards, it prioritizes urban drivability and low running costs.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.0 mm × 80.5 mm | |
Power output | 55–66 kW (75–90 PS) | |
Torque | 190–200 Nm @ 1,750 rpm | |
Fuel system | Common rail (Bosch CP1 or CP3) | |
Emissions standard | Euro 4 | |
Compression ratio | 16.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett) | |
Timing system | Belt‑driven | |
Oil type | Renault RN0700 or RN0710 (SAE 5W‑40) | |
Dry weight | 115 kg |
The Renault 843 723 was used across Renault's Clio III/Modus platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Twingo III-creating minor interchange considerations. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from Renault technical bulletins (2006-2010) and aggregated European owner workshop data (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 843 723 is generally economical and robust for city driving, but its Achilles' heel is the high-pressure fuel pump. With strict adherence to using high-quality diesel and timely preventative maintenance, including potential pump replacement, it can be very reliable. Regular oil changes with the correct specification are also crucial.
The most frequent and critical issue is high-pressure fuel pump failure, leading to sudden power loss. Other common problems include EGR system clogging, timing belt wear, and turbo actuator failure. These are well-documented in Renault service information bulletins.
This 1.5 dCi engine was primarily used in the Clio III, Modus, and Twingo III from 2006 to 2010. It was also used in the European-market Nissan Micra K12. It was badged as the 1.5 dCi 75, 85, or 90, depending on the power output.
Aftermarket ECU tuning is common on the 843-723 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Exceptional for its size. In a Clio III or Modus, you can expect real-world figures of 4.5-5.5 L/100km (51-63 mpg UK) on a mixed cycle. Highway driving can see consumption drop to around 4.0 L/100km (71 mpg UK), making it one of the most economical diesels of its era.
Yes. The 843 723 is an interference engine. If the timing belt breaks or jumps, the pistons will collide with the open valves, causing severe and expensive engine damage. This makes adhering to the timing belt replacement schedule absolutely critical.
Renault specifies RN0700 or RN0710 fully synthetic oil, typically in 5W-40 viscosity. This is essential for protecting the turbocharger, maintaining fuel system integrity, and ensuring proper lubrication. Using the correct specification is non-negotiable for engine health.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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
Type-approval guidance and documentation.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.