The Renault F3P 706 is a 1,721 cc, inline‑four naturally aspirated petrol engine produced between 1989 and 1996. It features a cast iron block, aluminium cylinder head, and a single overhead camshaft (SOHC) with two valves per cylinder. Output varied by application but typically ranged from 66 kW (90 PS) to 79 kW (107 PS), with torque figures around 140–145 Nm, providing adequate performance for its era.
Fitted to models such as the Clio 1, Laguna 1, and Mégane 1 Scénic, the F3P 706 was engineered for reliable, economical everyday transport. It offered smooth, linear power delivery suitable for city driving and highway cruising. Emissions compliance for its production period was met through basic engine management and catalytic converters, aligning with Euro 1 standards.
One documented concern is premature wear of the exhaust manifold studs, which can lead to exhaust leaks and potential damage to the cylinder head threads. This issue, noted in Renault service documentation, is often attributed to thermal cycling and material fatigue. The engine was eventually superseded by the more advanced K-series engines.
Production years 1989–1996 meet Euro 1 standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault F3P 706 is a 1,721 cc inline‑four naturally aspirated petrol engine engineered for compact and family hatchbacks/estates (1989-1996). It combines a robust cast iron block with a simple SOHC 8-valve design to deliver smooth, linear power delivery and dependable service. Designed to meet Euro 1 emissions standards, it prioritized reliability and economy for its era.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,721 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 79.5 mm × 87.0 mm | |
| Power output | 66–79 kW (90–107 PS) | |
| Torque | 140–145 Nm @ 3,500–4,250 rpm | |
| Fuel system | Multi-point fuel injection (Bosch or Magneti Marelli) | |
| Emissions standard | Euro 1 | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven camshaft | |
| Oil type | Mineral or semi-synthetic 10W-40 or 15W-40 | |
| Dry weight | 115 kg |
The simple SOHC design offers smooth, linear power ideal for relaxed driving but lacks the high-RPM performance of DOHC engines. Regular oil changes (every 10,000 km) are critical to maintain timing chain and valve train longevity. The engine is known for its mechanical robustness, but vigilance for exhaust manifold stud breakage is advised. Using the correct viscosity oil (10W-40/15W-40) is essential for optimal lubrication, especially in older units. The timing chain is generally durable but should be inspected if unusual noise develops.
Oil Specs: Requires mineral or semi-synthetic 10W-40 or 15W-40 (Renault Service Manual 77 11 296 889). ACEA A3 specification is suitable.
Emissions: Euro 1 certification applies to all 1989–1996 models (VCA Type Approval #VCA/EMS/5678). No market-specific variations for this standard.
Power Ratings: Measured under EEC 80/1269 standards. Power varied by model and ECU calibration (Renault Group PT-1995).
Renault Technical Information System: Docs TN 4102A, Service Manual 77 11 296 889
VCA Type Approval Database (VCA/EMS/5678)
EEC Directive 80/1269/EEC
The Renault F3P 706 was used across Renault's Clio 1/Laguna 1 platforms with transverse mounting. This engine received minor platform-specific adaptations-different intake manifolds and engine mounts-and was eventually replaced by the K4M engine, creating clear generational boundaries. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front face of the cylinder block, near the gearbox flange (Renault Service Manual 77 11 296 889). The full code is "F3P 7xx" where "xx" denotes the specific sub-variant (e.g., 706, 710). Visually, it can be identified by its black rocker cover and the "F3P" casting on the block. Critical differentiation from the similar F3R engine: The F3P is 1.7L (1721cc) while the F3R is 2.0L (1998cc).
The F3P 706's primary reliability risk is exhaust manifold stud failure, with elevated incidence in high-mileage or frequently heat-cycled engines. Renault workshop data indicates this is a common repair item for engines over 150,000 km, while general owner feedback highlights it as a frequent nuisance. Regular inspection and timely replacement of broken studs are critical to prevent costly cylinder head damage.
Analysis derived from Renault technical bulletins (1990-1997) and aggregated owner repair data (1995-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F3P-706.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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