The Renault 843 724 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2006 and 2011. It features an aluminium block and head, double overhead camshafts (DOHC), and a variable geometry turbocharger (VGT). This compact engine, part of the K9K family, was designed for efficiency in superminis and city cars, delivering outputs around 66–88 kW (90–120 PS) and 200–240 Nm of torque.
Fitted primarily to the Renault Clio III (B) and Twingo II (C06), including varia…
Production years 2006–2011 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/6789).
The Renault 843 724 is a 1,461 cc inline‑three turbo‑diesel engineered for superminis and city cars (2006-2011). It combines common-rail direct injection with a variable-geometry turbocharger to deliver responsive low-end torque and exceptional fuel economy. Designed to meet Euro 4 standards, it balances compact dimensions with everyday drivability.
| 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 | 66–88 kW (90–120 PS) | |
Torque | 200–240 Nm @ 1,750–2,500 rpm | |
Fuel system | Denso HP3 common-rail injection (up to 1,600 bar) | |
Emissions standard | Euro 4 | |
Compression ratio | 16.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Variable-geometry turbo (Honeywell or Mitsubishi) | |
Timing system | Belt‑driven | |
Oil type | ACEA B4 / RN0700 (e.g., SAE 5W‑40) | |
Dry weight | 115 kg |
The Renault 843 724 was used across Renault's B/C06 platforms with transverse mounting. This engine received platform-specific adaptations-different ECU mappings and ancillary layouts for the Clio versus the Twingo-creating minor service part variations. All adaptations are documented in OEM technical bulletins.
The 843 724's primary reliability risk is EGR valve and cooler clogging, with elevated incidence in short-trip urban driving. Renault internal service data from 2009 noted a high frequency of EGR-related warranty claims before 80,000 km, while UK DVSA data shows a correlation between neglected EGR maintenance and DPF-related MOT failures. Short journeys and low-quality fuel make adherence to OEM cleaning schedules critical.
Analysis derived from Renault technical bulletins (2006-2011) and UK DVSA failure statistics (2012-2022). 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 843 724 is generally reliable if maintained properly, but its main weakness is the EGR/DPF system, which is prone to clogging with short trips or poor fuel. With regular EGR cleaning, timely DPF regeneration, and strict adherence to service schedules, it can be very dependable. The 120,000 km timing belt replacement is non-negotiable.
The most frequent issues are EGR valve and cooler clogging, DPF regeneration failures, turbocharger VGT actuator problems, and glow plug failures. These are well-documented in Renault service bulletins. EGR/DPF issues are overwhelmingly linked to driving patterns and maintenance neglect.
This 1.5 dCi engine was primarily used in the third-generation Renault Clio (B, 2006-2011) and the second-generation Twingo (C06, 2007-2011), typically badged as the '1.5 dCi 85' or '1.5 dCi 105'. It was not used in larger models like the Mégane or Laguna of that era.
Yes, cautiously. ECU remaps can safely extract modest gains (+10-15 kW). However, the stock turbo, clutch, and DPF are weak points. Aggressive tuning increases the risk of turbo failure, clutch slippage, and chronic DPF blockages. Supporting modifications and a change in driving habits are essential for any substantial power increase.
Excellent. In a Clio III 1.5 dCi 85, expect real-world figures of ~5.0 L/100km (city) and ~3.8 L/100km (highway), translating to roughly 56-65 mpg UK combined. Its efficiency was a major selling point, making it popular for urban drivers and high-mileage commuters.
Yes. This is a critical point. The 843 724 is an interference engine. If the timing belt breaks or slips, the pistons will collide with the open valves, causing severe and expensive internal engine damage. This makes the 120,000 km timing belt replacement interval absolutely mandatory.
Renault specifies an oil meeting the ACEA B4 standard, typically a 5W-40 or 10W-40 synthetic or semi-synthetic blend. Using the correct oil is vital for protecting the turbo and DPF. Always consult your owner's manual for the exact RN specification (e.g., RN0700) recommended for your model year.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
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