Renault Clio
Renault's most-produced diesel with over 20 years of production history — with exemplary maintenance (oil every 10,000 km, fuel filter every 8,000–10,000 km) over 300,000 km is achievable. Biggest weakness: connecting rod bearings spin from around 100,000–150,000 km, especially with extended oil change intervals. Common-rail injectors (Delphi) and EGR valve are further service items.
Diesel on its way out
85 hp dCi in the Clio V — frugal, but the rough diesel doesn't suit the modern supermini.
Engine Weaknesses 5
The K9K connecting rod bearings are design-sensitive. With overly long oil change intervals or incorrect oil the bearing shells spin from around 100,000–150,000 km, resulting in total engine failure.
Symptoms: Knocking engine noise, oil pressure warning light, sudden engine stop
The Delphi high-pressure pump shows weaknesses from around 80,000 km. Metal wear from the pump contaminates the fuel circuit and damages the injectors and common rail — with consequential damage included.
Symptoms: Starting difficulties, sudden engine stall, 'injection fault' message
K9K injectors are very sensitive to fuel quality. Poor-quality diesel or clogged fuel filters lead to rough running, increased consumption and expensive injector replacement.
Symptoms: Engine hesitation, power loss, increased fuel consumption, black smoke
With frequent short-trip operation the DPF cannot complete its regeneration cycle and becomes blocked. Forced regeneration or replacement required — particularly problematic in city vehicles with the 90 hp unit.
Symptoms: DPF warning light, power reduction (limp mode), increased consumption
The EGR valve on the K9K fouls with soot deposits, especially with frequent short-trip use. Annual cleaning is necessary to prevent power loss and increased fuel consumption.
Symptoms: Power loss, rough idle, increased fuel consumption
Vehicle Weaknesses 7
Recall due to a faulty weld between the reinforcement plate and the locking bracket. Check whether the recall has already been carried out on affected vehicles.
On the E-Tech hybrid drive, gearbox oil can enter the electric motor through a defective O-ring. Result: sudden loss of drive. A recall affected approximately 330,000 vehicles (production 04/2020–04/2023), software update required.
Individual vehicles (especially early production batches) show water pump failures below 40,000 km, which can cause timing belt damage. Particularly known on early build years.
The multimedia and infotainment system of the Clio V occasionally fails completely. Erroneous emergency brake assist warnings and problems with the start-stop system are documented complaints.
The Clio V also shows above-average defect rates at vehicle inspections for suspension and brakes. Sway bar links and brake systems are known weak points of the range.
Driver assistance systems such as lane keep assist and automatic emergency braking occasionally malfunction. Software updates often help but don't always resolve the problem permanently.
The OpenR-Link infotainment system on the Clio V freezes regularly or spontaneously reboots, especially after software updates. The reversing camera can fail completely.
Reports & Tests
The fifth Clio shows notable quality improvements over its predecessors and registers below-average defect rates. Minor weaknesses remain in the foot brake and parking brake.
