Renault Clio Mk4 0.9 TCe 90bhp Known Faults
What To Check Before Buying
- ✓Check service history — was oil changed regularly?
- ✓Look for blue/black smoke on startup and under load
- ✓Listen for rattles, knocking, or turbo whine
- ✓Test all electrics including windows, AC, and central locking
- ✓Check for DPF warning light or recent regenerations
- ✓Inspect for rust underneath and around wheel arches
- ✓Request a pre-purchase inspection by an independent mechanic
Known Faults
Thermostat Housing Leak
SevereThe plastic thermostat housing on the 0.9 TCe warps and cracks, leading to a rapid loss of engine coolant and severe overheating risk.
Timing Chain Stretch and Rattle
SevereThe 0.9 TCe 3-cylinder engine suffers from premature timing chain stretch, causing an aggressive rattle and potentially fatal engine timing slip.
Alternator / Smart Charge System Failure
SevereModern vehicles use smart charging systems to reduce engine load, but the complex regulators on the alternators frequently fail.
Starter Motor Solenoid / Brush Wear
SevereThe starter motor wears out internally. This is particularly common on vehicles equipped with Stop/Start systems.
Clutch Slave Cylinder / Concentric Bearing Leak
SevereThe concentric slave cylinder (CSC) inside the gearbox bellhousing fails, leaking hydraulic fluid and causing clutch failure.
Suspension Coil Spring Snapping
SevereA very common MOT failure in the UK. Suspension coil springs corrode and snap, usually near the bottom pigtail.
Sticking Brake Calipers (Slider Pins Seized)
ModerateThe floating brake caliper design relies on sliding pins. In the UK climate, salt and water ingress cause these pins to rust and seize solid.
Wheel Bearing Wear and Drone
ModerateWheel bearing wear is a normal consumable on UK roads, but frequent pothole strikes accelerate the failure rate significantly.
Ignition Coil Pack Failure
ModerateCoil packs break down internally with heat and age, causing severe misfires under load.
Shock Absorber Oil Leak and Failure
ModerateShock absorbers lose their damping efficiency over time, and eventually blow their seals, leaking hydraulic fluid.
VVT Solenoid Oil Leak
MinorThe Variable Valve Timing (VVT) solenoid located on the top of the cylinder head leaks oil, which runs down the front of the engine.
Keycard Failure / Not Detected
MinorRenault's hands-free keycard system frequently fails to recognise the key, refusing to unlock the car or start the engine.
Air Conditioning Condenser Leak (Stone Damage)
MinorThe air conditioning condenser is mounted at the very front of the cooling pack, making it highly susceptible to stone damage from the road, leading to refrigerant loss.
Front Anti-Roll Bar Drop Link Wear
MinorThe front anti-roll bar drop links wear out on heavily potholed UK roads, causing an annoying knocking sound at low speeds.
Electric Window Regulator Cable Failure
MinorThe cables inside the electric window regulator mechanism fray and snap, causing the window glass to drop into the door frame.
Engine Thermostat Sticking Open
MinorThe engine coolant thermostat fails in the 'open' position. The engine never reaches its optimal operating temperature, killing fuel economy.
12V Battery Degradation and Failure
MinorLead-acid and AGM batteries have a finite lifespan. Modern cars are highly sensitive to voltage drops, causing bizarre electrical faults before the battery completely dies.
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