The Renault 829 703 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2001 and 2006. It features a direct injection common — rail fuel system, a fixed — geometry turbocharger, and a dual overhead camshaft (DOHC) design. In standard applications, it produced 81 kW (110 PS), delivering strong low — rpm torque for everyday drivability.
Fitted primarily to the Mégane II (Phase 1) and Scénic II, the 829 703 was engineered for a balance of fuel economy and responsive…
Production years 2001–2006 meet Euro 3 standards .
The Renault 829 703 is a 1,870 cc inline‑four turbo‑diesel engineered for compact family vehicles (2001-2006). It combines common‑rail direct injection with a fixed‑geometry turbocharger to deliver strong low‑rpm torque and efficient cruising. Designed to meet Euro 3 standards, it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,870 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 80.0 mm × 93.0 mm | |
Power output | 81 kW (110 PS) | |
Torque | 240 Nm @ 1,750 rpm | |
Fuel system | Siemens VDO common‑rail (up to 1,350 bar) | |
Emissions standard | Euro 3 | |
Compression ratio | 18.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single fixed‑geometry turbo (Garrett) | |
Timing system | Belt-driven | |
Oil type | Renault RN0700 or RN0710 (SAE 5W‑40) | |
Dry weight | 148 kg |
The Renault 829 703 was used across Renault's Mégane II and Scénic II platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU mapping differences for estate vs. hatchback variants-and no significant facelift revisions during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
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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 manufacturer technical service bulletins and industry workshop records. 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 829 703 can be reliable with meticulous maintenance, particularly regarding fuel and oil quality. Its main weakness is the high-pressure fuel pump, especially in early (pre-2004) models. Using high-quality diesel and adhering strictly to service intervals for oil and timing belt changes significantly improves long-term durability.
The most frequent issues are high-pressure fuel pump failure, EGR system clogging, turbocharger actuator faults, and timing belt wear. Fuel pump and EGR problems are well-documented in Renault technical notes and are the most common causes of breakdowns for this engine.
The 829 703 engine was used in the first phase of the Renault Mégane II (2003-2006) and Scénic II (2003-2006), specifically in the 1.9 dCi 110 PS variants. It was not used in other Renault models or licensed to other manufacturers during this period.
Aftermarket ECU tuning is common on the 829-703 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.
Real-world fuel economy is very good. Expect around 6.5 L/100km (city) and 4.5 L/100km (highway), translating to approximately 43-52 mpg (UK) combined. Actual figures depend heavily on driving style and the condition of the EGR and turbo systems.
Yes. The 829 703 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 adhering to the timing belt replacement schedule absolutely critical.
Renault specifies RN0700 or RN0710 specification oil, typically in 5W-40 viscosity. Using the correct oil is vital for protecting the turbocharger and ensuring proper lubrication of the timing belt tensioner. Never use an oil that doesn't meet these Renault specifications.
Comprehensive technical documentation and regulatory references
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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.
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