Renault Clio
Solid early-generation dCi with a Bosch common-rail system that holds up well. Turbo failures and con-rod bearing damage are the known risks. The oil pump wears with mileage — 10,000 km oil changes are non-negotiable. Timing belt every 90,000-120,000 km.
Diesel Daily Duties
80 hp dCi in the Clio — frugal but joyless.
Engine Weaknesses 5
The turbocharger on the F9Q is a known weak spot. Shaft play, oil supply problems and heat damage cause power loss and limp mode, typically from 120,000–160,000 km.
Symptoms: Whistling from turbo, power loss, blue/white smoke clouds, limp mode
The common-rail injectors on the F9Q are prone to contamination and mechanical wear. Loose injectors or faulty injection leads to misfires and the fault code 'injection defective'.
Symptoms: Engine stumbling, misfires, difficult cold start, 'injection defective' message
The EGR valve and intercooler on the F9Q are prone to heavy sooting. A burst intercooler manifests as power loss and heavy smoke — a well-known problem on early Laguna II models.
Symptoms: Heavy smoke, significant power loss, rough engine running
The injector wiring harness and ECU corrode from engine vibration and moisture. Faulty connections cause sporadic misfires and ECU resets.
Symptoms: Sporadic engine misfires, ECU reset while driving
The camshaft sensor on the F9Q fails comparatively frequently and generates fault codes. Replacement is cheap, but an unplanned failure can leave the car stranded.
Symptoms: Engine fault message, difficult start, sporadic stalling
Vehicle Weaknesses 6
Rust spots on connectors, weak batteries and loose contacts cause electronics problems. More than half of all Clio IIs fail their first vehicle inspection.
Suspension components and wheel bearings wear prematurely. Tie rod ends and control arms are regularly replaced parts, especially at higher mileages.
Rust on the exhaust system is a classic Renault problem. In addition, brake lines and the underbody corrode significantly on older examples.
The rear drum brakes tend to seize after extended periods of inactivity. Brake pads and brake lines also wear faster than average at higher mileages.
Sagem brand ignition coils in the Clio II are systemically weak. Multiple coils fail in quick succession. Known on 1.4 and 1.6-16V engines, typically from 80,000 km.
Water penetrates under the tailgate and into the door frames; the bodywork rusts from the inside. Faulty door seals and the seal under the tailgate encourage moisture ingress.
