The Renault D4F 784 is a 1,149 cc, inline‑four petrol engine produced between 2000 and 2010. It features a dual overhead camshaft (DOHC) design with 16 valves and multi‑point fuel injection. This compact unit delivered 55 kW (75 PS) and 105 Nm of torque, prioritizing urban efficiency. Its lightweight aluminium block contributes to overall vehicle economy.
Fitted primarily to the Clio II (B/C segments) and Twingo I, the D4F 784 was engineered for agile city driving and low r…
Production years 2000–2005 meet Euro 3 standards; 2006–2010 models may have Euro 4 compliance depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Renault D4F 784 is a 1,149 cc inline‑four petrol engineered for supermini applications (2000-2010). It combines DOHC 16-valve architecture with multi-point fuel injection to deliver responsive low-end power and frugal urban consumption. Designed to meet Euro 3 (and some market-specific Euro 4) standards, it prioritizes compactness and efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,149 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 68.0 mm × 79.5 mm | |
Power output | 55 kW (75 PS) @ 5,500 rpm | |
Torque | 105 Nm @ 3,500 rpm | |
Fuel system | Multi-point fuel injection (Siemens) | |
Emissions standard | Euro 3 (pre‑2006); Euro 4 depending on market | |
Compression ratio | 9.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven camshafts | |
Oil type | Renault RN0700 or RN0710 (SAE 5W-40) | |
Dry weight | 89 kg |
The Renault D4F 784 was used across Renault's B-segment platforms with transverse mounting. This engine received platform-specific adaptations-unique engine mounts for the Clio II versus the Twingo I-creating minor interchange limits for ancillary components. All adaptations are documented in OEM technical bulletins.
The D4F 784's primary reliability risk is exhaust camshaft lobe wear, with elevated incidence in high-mileage or frequently high-RPM driven vehicles. Internal Renault reports indicate this was a notable failure mode for engines exceeding 150,000 km, while general owner feedback highlights timing belt neglect as a leading cause of catastrophic failure. Aggressive driving and infrequent oil changes accelerate cam wear, making adherence to service schedules critical.
Analysis derived from Renault technical bulletins (2002-2008) and owner-reported failure data (2010-2023). 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 D4F 784 is generally robust for urban use if meticulously maintained. Its main Achilles' heel is the exhaust camshaft, which can wear prematurely in high-mileage cars. Crucially, the timing belt must be changed every 60,000 km to avoid engine destruction. With strict adherence to service schedules and correct oil, it can be a dependable engine.
The top issues are exhaust camshaft lobe wear (causing a tapping noise), timing belt failure (if neglected), ignition coil pack failures (causing misfires), and coolant leaks from the plastic thermostat housing. These are well-documented in Renault service information and owner communities.
This 1.2L 16V petrol engine was primarily used in the Renault Clio II (2000-2005) and the second phase of the Renault Twingo I (2001-2007). It was the performance option over the 8-valve engines in these superminis, badged as the '1.2 16V' with 75 PS.
Minor gains are possible. An ECU remap can yield around +5-8 kW, and a performance exhaust can help. However, the engine's internals, particularly the known camshaft weakness, limit significant tuning potential. It's generally not considered a strong candidate for major power upgrades compared to other Renault engines.
It offers good economy for its era. In a Clio II, expect around 6.5-7.0 L/100km (40-43 mpg UK) combined in real-world driving. City driving might see 8.0 L/100km (35 mpg UK), while highway cruising can drop to 5.5 L/100km (51 mpg UK). Figures are highly dependent on driving style.
Yes. The D4F 784 is an interference engine. If the timing belt breaks or jumps, the pistons will collide with the open valves, causing severe and expensive internal damage. This makes the 60,000 km timing belt replacement interval absolutely critical.
Renault specifies RN0700 or RN0710 (5W-40) oil. Using the correct specification is vital for protecting the camshafts. High-quality synthetic or semi-synthetic oils meeting these Renault norms are strongly recommended. Change intervals should not exceed 15,000 km or 1 year.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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