Engine Renault Clio 1.2 TCE 16V 100 Hp D4F 786 | Renault 1.2 TCE Engine - marcosengines.com https://www.marcosengines.com/product/engine - renault - clio - 1 - 2 - tce - 16v - 100 - hp - d4f - 786/ The Engine Renault Clio 1.2 TCE 16V 100 Hp D4F 786 | Renault 1.2 TCE Engine is a testament to French engineering excellence , blending power, efficiency, and compact design in a highly versatile configuration. We offer you a comprehensive breakdown of everything you need to know about this popular powertrain — specs, performance characteristics, common issues, tuning potential, and maintenance tips. Engine Overview: D4F 786 Specifications The D4F 786 engine is a turbocharged variant of Renault’s D4F engine family. It is part of the TCE (Turbo Control Efficiency) range and was used in various Clio models and other compact Renault platforms. Specification Detail Engine Code D4F 786 Displacement 1,149 cc (1.2 liters) Engine Type Inline 4 - cylinder, 16 - valve Fuel Type Petrol Induction Turbocharged Maximum Power Output 100 Hp (74 kW) at 5,500 rpm Maximum Torque 145 Nm at 3,000 rpm Valvetrain DOHC – Dual Overhead Camshafts Compression Ratio 9.8:1 Bore x Stroke 69.0 mm x 76.8 mm Fuel System Multi - point fuel injection Emission Standard Euro 4 / Euro 5 (varies by year) Performance Characteristics The Renault Clio 1.2 TCE 100 Hp D4F 786 delivers an impressive torque curve and fuel efficiency , making it ideal for urban and suburban driving. Despite its small displacement, the turbocharger boosts low - end torque significantly, offering lively acceleration and quick throttle response. • 0 - 100 km/h: ~11.0 seconds • Top Speed: 190 km/h (118 mph) • Fuel Economy (Combined): ~5.8 L/100 km • CO2 Emissions: 135 g/km This engine shines in compact vehicles due to its power - to - weight efficiency , and it offers more real - world drivability compared to naturally aspirated competitors in the same segment. Engineering and Design Advantages The D4F 786 engine integrates several cutting - edge technologies : • Turbocharger with intercooler for enhanced power delivery. • Lightweight aluminum block reduces vehicle weight. • Timing belt - driven camshafts ensure quiet and efficient valve operation. • Integrated exhaust manifold for quicker catalyst light - off and reduced emissions. These innovations make the D4F 786 highly responsive and mechanically robust , particularly for a downsized turbocharged petrol engine. Gearbox Pairing and Drivetrain Typically paired with a 5 - speed manual transmission , this engine delivers smooth gear transitions and excellent gear ratio spacing . The transmission allows for: • Efficient use of the torque band. • Good highway cruising behavior. • Low - end power accessibility without over - revving. Drivetrain layout: Front - Wheel Drive (FWD) Clutch type: Single dry plate Common Issues & Known Problems While generally reliable, the D4F 786 engine does present some maintenance concerns over its service life: 1. Turbocharger Wear • Over time, the turbo unit can develop shaft play or oil leaks. • Avoid engine shutdown immediately after spirited driving — let the turbo cool 2. Timing Belt Replacement • Recommended every 100,000 km or 5 years • Failure can lead to catastrophic engine damage due to its interference design. 3. Ignition Coil Failure • Misfires and rough idling may occur. • Replacing all four ignition coils at once is often the best approach. 4. Oil Consumption • Some owners report excessive oil usage , especially after 150,000 km. • Use high - quality 5W - 40 synthetic oil to mitigate wear. 5. Carbon Build - Up • Due to direct injection, intake valve deposits may occur. • Periodic engine decarbonization is advised. Maintenance Schedule for Optimal Longevity Component Service Interval Engine Oil & Filter Every 10,000 – 15,000 km Timing Belt Every 100,000 km or 5 years Spark Plugs Every 30,000 – 40,000 km Air Filter Every 20,000 km Coolant Every 5 years Brake Fluid Every 2 years Routine maintenance is critical. Stick to OEM parts and schedule regular inspections to ensure the D4F 786 engine performs optimally Tuning and Performance Upgrades The 1.2 TCE D4F 786 has strong potential for safe and effective tuning . Here are common modifications: Stage 1 ECU Remap • Gains: +15 – 20 Hp / +30 Nm torque • Improved throttle response and lower turbo lag Upgraded Intercooler • Better cooling = denser air intake = more power High - Flow Air Filter & Intake • Enhances breathing capability and improves engine tone Stainless Steel Exhaust System • Reduces back pressure, increasing responsiveness and mild power gain Be mindful of fuel grade and thermal management if going beyond Stage 1 tuning. Pros and Cons of the D4F 786 Engine Pros • High torque at low RPM • Fuel - efficient yet powerful • Lightweight design • Reliable when maintained correctly Cons • Sensitive to neglect (oil changes, timing belt) • Turbo longevity can be a concern • Carbon build - up risk over time Compatible Vehicles with the D4F 786 Engine The Renault D4F 786 engine can be found in several popular models: • Renault Clio III • Renault Modus • Dacia Sandero (select trims) • Renault Twingo (limited versions) Its compatibility and compact form factor make it a preferred choice for small cars demanding punchy performance. Comparison With Other Renault Engines Engine Power Turbocharged Fuel Efficiency Maintenance Cost D4F 786 100 Hp K4M 708 110 Hp H4Bt 400 (TCe 90) 90 Hp While newer engines like the H4Bt offer better emissions and fuel economy, the D4F 786 remains a solid middle ground for cost, reliability, and driving enjoyment. Parts Availability and Cost Thanks to Renault's wide distribution , parts for the D4F 786 engine are easily accessible in Europe and many global markets. • Timing Kit (OEM): $150 – $200 • Turbocharger (New): $400 – $600 • ECU Remap: $250 – $350 • Complete Engine (Used): $1,000 – $1,500 Opt for genuine or OEM - approved components to ensure proper fit and longevity. Final Thoughts The Renault Clio 1.2 TCE 16V 100 Hp D4F 786 engine strikes a rare balance between compact performance, fuel efficiency, and tuning potential . Whether you're buying, repairing, or upgrading, this engine delivers versatile performance in a well - engineered package. Proper care ensures long - term reliability and fun behind the wheel Phone: (929) 376 - 7413 Email: info@marcosengines.com