The Renault D4F 786 is a 1,149 cc, inline‑four petrol engine produced between 2007 and 2014. It features a dual overhead camshaft (DOHC) design with 16 valves and multi‑point fuel injection, delivering outputs around 55 kW (75 PS) and 105 Nm of torque. Its compact dimensions and light weight make it ideal for city cars, providing adequate power for urban mobility with an emphasis on low running costs.
Fitted primarily to the Twingo II and Modus, the D4F 786 was engineered for u…
All production years (2007–2014) meet Euro 4 standards .
The Renault D4F 786 is a 1,149 cc inline‑four petrol engine engineered for supermini and city car applications (2007-2014). It combines DOHC 16-valve architecture with multi-point fuel injection to deliver responsive low-end power and urban efficiency. Designed to meet Euro 4 emissions standards, it prioritizes compactness and cost-effective running.
| 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 @ 3,000 rpm | |
Fuel system | Multi-point fuel injection (Siemens) | |
Emissions standard | Euro 4 | |
Compression ratio | 9.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 89 kg |
The Renault D4F 786 was used across Renault's B-segment platforms with transverse mounting. This engine received platform-specific adaptations-different engine mounts for the Twingo and Modus-but no major ECU revisions occurred during its production run. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 786 is generally reliable for city driving if maintained properly. Its main documented weakness is the exhaust camshaft sensor, which is a relatively inexpensive and easy fix. With timely oil changes and addressing the sensor if it fails, these engines can easily reach 150,000 km or more. The mechanical components, like the block and head, are robust.
The most frequent issues are exhaust camshaft position sensor failure (causing limp mode), timing chain tensioner rattle, throttle body carbon buildup causing idle problems, and coolant temperature sensor failure. These are well-documented in Renault service information and are common across many small petrol engines of this era.
The D4F 786 1.2 16V engine was primarily used in the Renault Twingo II (2007-2014) and the Renault Modus (2007-2012). It was the standard petrol engine option for these models, offering a balance of economy and adequate performance for urban use.
Minor power gains are possible through ECU remapping, typically yielding an extra 5-8 kW. However, the engine's low state of tune from the factory means there is limited headroom for significant power increases without internal modifications. It's generally more cost-effective to address reliability items than to pursue tuning.
Expect real-world fuel economy of approximately 6.0 L/100km in mixed driving, translating to roughly 47 mpg UK. In city driving, consumption may be around 7.0 L/100km (40 mpg UK), while steady highway cruising can achieve 5.0 L/100km (56 mpg UK), making it very economical for its size.
Yes. The D4F 786 is an interference engine. If the timing chain fails or jumps, the pistons will collide with the open valves, causing severe internal damage requiring a costly rebuild. This underscores the importance of addressing any timing chain noise promptly.
Renault specifies RN0700 (5W-40) oil for the D4F engine. Using a high-quality synthetic 5W-40 that meets ACEA A3/B4 standards is crucial. Change intervals should not exceed 15,000 km or 12 months to ensure optimal engine protection and longevity.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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