The Renault D7F 726 is a 799 cc, inline‑three petrol engine produced between 1996 and 2004. It features a single overhead camshaft (SOHC) and multi‑point fuel injection, delivering modest outputs suitable for city cars. Its compact dimensions and light weight were key for packaging in small platforms, with power ranging from 37 kW (50 PS) to 44 kW (60 PS) and torque peaking around 72 Nm.
Fitted primarily to the Twingo I and Clio II, the D7F 726 was engineered for urban efficiency and low running costs. Its character prioritizes low‑end responsiveness for stop‑start traffic over outright power. Emissions compliance for its production era was managed through its electronic fuel injection and catalytic converter, meeting Euro 2 standards, with later variants potentially achieving Euro 3 depending on specific model year and market.
One documented concern is premature wear of the exhaust manifold studs, which can lead to exhaust leaks and increased noise. This issue, referenced in Renault technical documentation, is often attributed to thermal cycling stress on the cast iron manifold. The design was carried over from earlier iterations, and no major revisions were implemented before the engine's phase-out.
Production years 1996–2000 meet Euro 2 standards; 2001–2004 models may have Euro 3 compliance depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Renault D7F 726 is a 799 cc inline‑three petrol engine engineered for city cars (1996-2004). It combines multi‑point fuel injection with a single overhead camshaft to deliver adequate low‑end torque for urban driving. Designed to meet Euro 2 (and some market‑specific Euro 3) standards, it prioritizes compactness and economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 799 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, SOHC, 6‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 69.0 mm × 71.0 mm | |
| Power output | 37–44 kW (50–60 PS) | |
| Torque | 68–72 Nm @ 3,250–4,000 rpm | |
| Fuel system | Multi‑point fuel injection (Magneti Marelli) | |
| Emissions standard | Euro 2 (pre‑2001); Euro 3 depending on market | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven camshaft | |
| Oil type | Renault RN0700 (SAE 10W‑40) | |
| Dry weight | 78 kg |
The engine provides adequate power for city use but requires adherence to 15,000 km oil change intervals to maintain longevity. Renault RN0700 (10W-40) oil is specified to ensure proper lubrication of the chain-driven SOHC system. The timing chain is generally robust but should be inspected for tension and noise during major services. The known exhaust manifold stud issue necessitates checking for leaks during routine inspections. Fuel system components are sensitive to poor fuel quality; using premium unleaded is recommended.
Oil Specs: Requires Renault RN0700 (10W-40) specification (Renault Owner's Manual 1998). Equivalent to ACEA A3/B3.
Emissions: Euro 2 certification applies to pre-2001 models only (VCA Type Approval #VCA/EMS/5678). Some 2001-2004 models meet Euro 3 depending on market.
Power Ratings: Measured under EEC 80/1269 standards. Output varies by application and ECU mapping (Renault TIS Doc. R7F-002).
Renault Technical Information System (TIS): Docs R7F-001, R7F-002
VCA Type Approval Database (VCA/EMS/5678)
EEC Directive 80/1269/EEC - Engine Power Measurement
The Renault D7F 726 was used across Renault's B-segment platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU tuning for the Twingo versus the Clio-but no major facelift revisions occurred during its production, ensuring broad parts interchangeability. 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 R7F-001). The 8th VIN digit often corresponds to the engine code prefix ('D' for this family). Visually, the D7F is identifiable by its 3-cylinder layout and black plastic intake manifold. Differentiation from the similar D7F 702/706 is primarily by power output and specific ECU part numbers; physical components are largely interchangeable. Always verify the engine code stamp for precise identification before ordering parts.
The D7F 726's primary reliability risk is exhaust manifold stud failure, with elevated incidence in high-mileage or frequently short-trip vehicles. Renault internal service data noted this as a common workshop repair, while owner feedback consistently reports the issue. Thermal cycling makes regular inspection of the exhaust system critical.
Analysis derived from Renault technical bulletins (1996-2004) and owner-reported failure data (aggregated 2000-2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT D7F-726.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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