The Renault F4R 738 is a 1,998 cc, inline‑four petrol engine produced between 1998 and 2002. It features a cast‑iron block, aluminium head, and a double overhead camshaft (DOHC) with four valves per cylinder. In standard European specification, it produced 100 kW (136 PS) and 180 Nm of torque, offering refined performance for its class.
Fitted primarily to the Renault Laguna I (Phase 2) and Megane I models, the F4R 738 was engineered for smooth, responsive performance in mid-size family cars. Emissions compliance for its production period was met through multi-point fuel injection and a catalytic converter, aligning with Euro 2 standards.
One documented concern is premature failure of the exhaust camshaft phase variator, which can lead to timing issues and reduced performance. This weakness, addressed in Renault Technical Note MEC 03‑01, is often linked to oil degradation or insufficient maintenance. The design was revised in later F4R variants to improve reliability.
Production years 1998–2002 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/5683).
The Renault F4R 738 is a 1,998 cc inline‑four petrol engine engineered for mid-size hatchbacks and saloons (1998-2002). It combines a robust cast‑iron block with a DOHC 16-valve valvetrain to deliver smooth, responsive performance. Designed to meet Euro 2 standards, it balances power delivery with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.7 mm × 93.0 mm | |
| Power output | 100 kW (136 PS) @ 6,000 rpm | |
| Torque | 180 Nm @ 3,750 rpm | |
| Fuel system | Multi-point fuel injection | |
| Emissions standard | Euro 2 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven camshafts | |
| Oil type | Mineral 10W‑40 or semi-synthetic 5W-40 | |
| Dry weight | Not specified in available documentation |
The DOHC 16-valve design provides smoother power delivery and higher revving capability than 8-valve engines but requires stricter maintenance. The timing chain is generally robust but should be inspected for wear or noise after 150,000 km. Using the correct oil specification is critical to prevent sludge buildup and ensure proper lubrication of the camshaft phase variator. The multi-point injection system offers precise fuel metering but requires periodic injector cleaning and throttle body maintenance.
Oil Specs: Requires mineral 10W-40 or semi-synthetic 5W-40 (Renault Service Manual 77 11 123 461). Synthetic oils meeting ACEA A3/B3 are also suitable.
Emissions: Euro 2 certification applies to all 1998–2002 models (VCA Type Approval #VCA/EMS/5683).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across documented variants (Renault Group PT-2000).
Renault Technical Information System: Docs MEC 01-06, MEC 03-01
Renault EPC (Electronic Parts Catalogue) Ref. 77 11 234 576
VCA Type Approval Database (VCA/EMS/5683)
The Renault F4R 738 was used across Renault's Laguna I and Megane I platforms with transverse mounting. This engine received minor platform-specific adaptations-different intake manifolds and ECU mappings for various models-and no significant facelift revisions during its production run, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front face of the cylinder block, just below the exhaust manifold (Renault Service Manual 77 11 123 461). The code will read "F4R 738" followed by a serial number. Visually, it can be identified by its cast-iron block, twin camshaft covers, and the presence of a multi-point fuel injection system. Differentiate from the F4R 700 by its higher power output (136 PS vs. 129 PS) and later production years.
The F4R 738's primary reliability risk is exhaust camshaft phase variator failure, with elevated incidence in high-mileage or poorly maintained vehicles. Renault internal service data indicated this was a common workshop repair, while the mechanical design otherwise proved very durable. Regular oil changes with correct specification make using updated replacement hardware critical.
Analysis derived from Renault technical bulletins (1998-2003) and owner club maintenance records (1999-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F4R-738.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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