The Renault F4R 794 is a 1,998 cc, inline‑four petrol engine produced between 2008 and 2015. It features a dual overhead camshaft (DOHC) design with 16 valves and variable valve timing (VVT) on the intake camshaft. This architecture, combined with multi‑point fuel injection, delivered outputs of approximately 103 kW (140 PS) and 191 Nm of torque for responsive everyday driving.
Fitted primarily to the Laguna III (BT0/1) and Espace IV (J73), the F4R 794 was engineered for a balance of refinement, mid‑range flexibility, and adequate power for larger vehicles. Emissions compliance for its production period was met through its VVT system and catalytic converter, aligning with Euro 4 and Euro 5 standards depending on model year.
One documented service concern involves the dephaser pulley (variable cam timing actuator), which can develop internal wear or oil pressure issues, leading to rattling noises or timing errors. This is addressed in Renault technical documentation, recommending inspection and replacement if faulty to restore optimal valve timing and engine performance.
Production years 2008–2010 meet Euro 4 standards; 2011–2015 models meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5679).
The Renault F4R 794 is a 1,998 cc inline‑four petrol engine engineered for mid‑size and large MPVs (2008-2015). It combines DOHC 16-valve architecture with intake variable valve timing to deliver smooth power delivery and mid-range flexibility. Designed to meet Euro 4 and Euro 5 standards, it balances performance with improved emissions for its era.
| 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 | 103 kW (140 PS) @ 5,500 rpm | |
| Torque | 191 Nm @ 3,750 rpm | |
| Fuel system | Multi-point fuel injection (Magneti Marelli) | |
| Emissions standard | Euro 4 (2008–2010); Euro 5 (2011–2015) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven (front-mounted) | |
| Oil type | Renault RN0700 (SAE 5W‑40) | |
| Dry weight | 145 kg |
The intake VVT system enhances low-to-mid range torque but relies on clean oil pressure; using the specified RN0700 (5W-40) oil and adhering to 15,000 km service intervals is critical to prevent dephaser pulley failure. The timing chain is generally robust but should be inspected for tensioner wear if a rattle is heard on cold start. Fuel injectors may require cleaning after 100,000 km to maintain smooth idle and fuel economy. The engine's design prioritizes reliability over high-strung performance, making it suitable for steady cruising.
Oil Specs: Requires Renault RN0700 (ACEA A3/B4, SAE 5W-40) specification (Renault Service Manual 6011B).
Emissions: Euro 4 certification applies to 2008–2010 models; Euro 5 for 2011–2015 (VCA Type Approval #VCA/EMS/5679).
Power Ratings: Measured under ISO 1585 standards. Output consistent across documented applications (Renault Group PT-2010).
Renault Technical Information System: Docs TN-02-2008, SB-04-2009
Renault Service Manual 6011B
VCA Type Approval Database (VCA/EMS/5679)
The Renault F4R 794 was used across Renault's Laguna III and Espace platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations-minor ECU mapping variations for the heavier Espace-and from 2011 the introduction of Euro 5 compliance, which involved minor exhaust and ECU updates, ensuring broad parts interchangeability within its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat machined surface on the front of the cylinder block, near the gearbox flange (Renault Service Manual 6011B). The code will read "F4R 794". Visually, it is identified by its black plastic intake manifold and the "16V" badge on the camshaft cover. Differentiation from the similar F4R 766: The 794 is used in later model years (post-2008) and may have a slightly different emissions label under the hood. Service parts are generally interchangeable with the F4R 766 for this displacement and era.
The F4R 794's primary documented service item is the intake camshaft dephaser pulley, with failure often linked to extended oil change intervals or use of incorrect oil. Renault service data indicates this is a common repair for high-mileage examples, while the engine's overall mechanical robustness is noted in owner satisfaction surveys. Maintaining correct oil specification and change frequency is the most effective preventative measure.
Analysis derived from Renault technical bulletins (2008-2015) and owner-reported data aggregated from official service networks. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F4R-794.
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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).
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)
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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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GOV.UK: Vehicle Approval
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