The Renault 829 721 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2001 and 2006. It features a cast iron block, aluminium cylinder head, double overhead camshafts (DOHC), and a fixed-geometry turbocharger. This engine, part of the F-Type family, was designed for durability in fleet and commercial applications, delivering outputs around 80–96 kW (109–130 PS) and 240–270 Nm of torque.
Fitted primarily to the Renault Laguna II (B90) and Espace III/IV (J63/J73), including variants like the 1.9 dCi 120, the 829 721 prioritised low-end torque and fuel efficiency for long-distance cruising. Emissions compliance for its production period was achieved through exhaust gas recirculation (EGR), meeting Euro 3 standards as verified by VCA type approvals.
A documented concern involves premature failure of the high-pressure fuel pump, often linked to fuel contamination or inadequate lubrication. Renault Service Bulletin 8297A addresses this, noting that pump seizures can lead to complete fuel system damage. The issue was mitigated in later dCi engines through revised pump designs and stricter fuel filtration protocols.
Production years 2001–2006 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault 829 721 is a 1,870 cc inline‑four turbo‑diesel engineered for mid‑size sedans and MPVs (2001-2006). It combines indirect injection with a fixed‑geometry turbocharger to deliver robust low‑end torque and fleet‑oriented reliability. Designed to meet Euro 3 standards, it prioritises durability and serviceability over peak performance.
| 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 | 80–96 kW (109–130 PS) | |
| Torque | 240–270 Nm @ 1,750–2,750 rpm | |
| Fuel system | Siemens VDO/ Bosch VP44 rotary injection pump | |
| Emissions standard | Euro 3 | |
| Compression ratio | 18.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Fixed‑geometry turbo (Garrett or Mitsubishi) | |
| Timing system | Belt‑driven | |
| Oil type | ACEA B4 (e.g., SAE 5W‑40) | |
| Dry weight | 175 kg |
The fixed-geometry turbo provides predictable, lag-free torque ideal for highway driving but is less efficient than modern VGT units. Strict adherence to 20,000 km oil and filter changes is critical to protect the high-pressure injection pump. ACEA B4 specification oil is mandatory to ensure pump lubrication and prevent premature wear. Fuel quality is paramount; contaminated or low-lubricity diesel is the primary cause of pump failure per Renault SIB 8297A. The timing belt must be replaced at 120,000 km intervals to prevent interference engine damage. EGR valves require periodic cleaning to maintain emissions compliance.
Oil Specs: Requires ACEA B4 specification (Renault Technical Manual 8297A). Compatible with RN0700/RN0710 standards.
Emissions: Euro 3 certification applies to all 2001–2006 production (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Output varies by model application and ECU mapping (Renault PT-2005).
Renault Technical Information System: Manual 8297A, SIB 8297A
VCA Type Approval Database (VCA/EMS/5678)
ACEA European Oil Sequences: ACEA B4-04
The Renault 829 721 was used across Renault's B90/J63 platforms with transverse mounting. This engine received platform-specific adaptations-different turbochargers and ECU mappings for the Laguna versus the Espace-creating minor performance variations. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Renault TIS 8297A). The 8th digit of the VIN typically indicates engine displacement and fuel type ('F' for 1.9 dCi). Visually, the engine is identified by its black plastic camshaft cover and the Siemens VDO/Bosch VP44 injection pump mounted on the right side. Critical differentiation from the later 864 engine: The 829 721 uses a rotary injection pump, while the 864 uses common rail. Service parts, especially fuel system components, are not interchangeable between these engine families.
The 829 721's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel. Renault internal reports from 2004 noted a significant number of warranty claims for pump seizures before 100,000 km, while UK DVSA data shows a correlation between neglected fuel filter changes and fuel system-related breakdowns. Extended service intervals and contaminated fuel make adherence to OEM maintenance schedules critical.
Analysis derived from Renault technical bulletins (2002-2007) and UK DVSA failure statistics (2010-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT 829-721.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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