About this model
The Renault Clio IV (X98) was produced from 2012 to 2019 and represents the fourth generation of one of Europe's best-selling small cars. On the used car market in BiH, the Clio IV is extremely popular because its affordable price, low fuel consumption and compact dimensions make it a go-to choice for city driving and daily commuting. The most sought-after version in BiH is the 1.5 dCi diesel with 75 or 90 horsepower, offering a solid balance between economy and performance. Most examples on our market come from France, Belgium and Switzerland, typically with 150,000-250,000 km on the clock. Despite its compact size, the Clio IV offers decent equipment and a surprisingly spacious interior for its class.
Engines and variants
This model is most commonly found in BiH with the following engines.
1.5 dCi 75 hp (K9K 608) - The lower-powered version with 75 hp, aimed at city driving and owners who want minimal fuel consumption. This variant lacks variable geometry on the turbo, making the turbocharger simpler and longer-lasting. However, the engine is more prone to DPF problems because it rarely reaches operating temperature on short trips. Due to the lower power output, it's a common choice for drivers who predominantly drive in the city.
1.5 dCi 90 hp (K9K 612/628/636) - The standard version with 90 hp and variable geometry turbo, the most common choice on the BiH market. The variable geometry turbo adds complexity because the vanes get stuck with soot, especially during city driving. That said, this engine is more responsive and handles open-road loads better. Parts are widely available and the service network in BiH covers it well.
0.9 TCe 90 hp (H4B 400/408) - A three-cylinder turbocharged petrol engine, popular with owners who drive short city trips. The petrol engine has a completely different fault profile: common issues with ignition coils, timing chain stretch and increased oil consumption, but no DPF or EGR worries. Suitable for LPG conversion, which can reduce running costs even further.
Reliability and reputation on the BiH market
The Clio IV with the 1.5 dCi engine is among the more reliable cars in its class on BiH roads. The K9K engine is one of the longest-lasting diesels on the market and examples with 300,000+ km are not uncommon with regular maintenance. The main enemy of this engine is short city trips, which accelerate DPF and EGR clogging - and that's exactly how most BiH owners use this car.
Parts are easy to find and relatively affordable. The Renault network in BiH covers the Clio well, and aftermarket parts are widely available from independent suppliers. Compared to competitors in the class (Peugeot 208 1.6 HDi, Ford Fiesta 1.4 TDCi, Opel Corsa D 1.3 CDTI), the Clio IV offers a better balance of comfort, reliability and maintenance costs. The principle is similar: these are all small diesel engines. However, the execution, software, oil and typical faults differ from manufacturer to manufacturer.
The typical owner is someone looking for an economical city car with low fuel consumption, unaware that this exact driving pattern destroys a diesel engine the fastest. In our workshop, we most often see examples that have been driven exclusively in the city on short trips for years, with a clogged DPF and EGR as the direct consequence.
Common faults we see
From our hands-on experience, here's what most commonly comes in for repair on this model.
1. EGR valve - clogging and seizing
Symptom: Loss of power, black smoke from the exhaust, check engine light on. Engine runs rough at idle.
The K9K engine is known for rapid EGR valve fouling, especially with city driving on short trips. Soot and carbon deposits from exhaust gases build up in the valve and intake manifold, reducing airflow and engine efficiency. The Clio IV uses an electric EGR valve, which makes things worse because the electronics throw a fault code as soon as the valve starts sticking. Compared to the Clio 3, which used a vacuum-operated EGR, the electric variant is more sensitive to contamination.
Advice: Cleaning the EGR is a temporary fix. If the valve is completely seized, replacement is the only option. We recommend occasional driving on the open road at higher revs to reduce deposit build-up.
2. DPF filter - clogging
Symptom: Warning on the dashboard, power loss, engine enters limp mode. Increased fuel consumption.
The Clio IV with Euro 5 and Euro 6 engines has a DPF filter that requires regular regeneration. Owners who drive exclusively in the city on short trips never reach the temperatures needed for automatic regeneration. The filter gradually clogs and the engine limits power to protect the system. This is one of the most common reasons Clio IV owners visit our workshop.
Advice: At least once a week, drive the car for 20-30 minutes on the open road above 2500 rpm. If the DPF is already clogged, a forced regeneration with a diagnostic tool can help, but only if the filter isn't physically damaged.
3. Injectors - leaking or clogging
Symptom: Engine hesitation, rough idle, hard cold starts, black or white smoke. Diagnostics show injector correction values out of range.
Earlier Clio IV models (2012-2014) used Delphi injectors that are more sensitive to fuel quality. Later models switched to a Bosch system that is more reliable but still sensitive to water and contaminants in the fuel. After 130,000-170,000 km, injectors start losing spray precision, and the rate of degradation depends on fuel quality and how regularly the fuel filter has been changed.
Advice: Regular fuel filter replacement every 25,000-35,000 km, depending on the quality of fuel you use, is the key preventive measure. If you notice hesitation on cold starts, bench-testing the injectors can reveal the problem before it escalates.
4. ECU (engine control unit) - failure
Symptom: Engine won't start, no communication with the diagnostic tool. Immobiliser light stays on constantly, radiator fan won't switch off.
The Delphi DCM1.2 engine control unit used in the Clio IV 1.5 dCi is a well-known weak point of this generation. This is a fault specific to the Clio IV because the previous generation (Clio 3) used a different ECU. Failure can occur suddenly and without prior symptoms. The most common cause is an internal power supply fault or corrosion on the connector, especially on vehicles that have been exposed to moisture.
Advice: If the engine won't start and diagnostics can't communicate with the ECU, there's a high probability the control unit has failed. Repair is possible with specialised electronics technicians, but replacement with programming is the more reliable solution.
5. Front suspension - wear
Symptom: Knocking and clunking over bumps, especially at lower speeds. Creaking when turning the steering wheel. Uneven front tyre wear.
The front suspension on the Clio IV is relatively light and designed for city driving on good roads. On Bosnian roads, tie rods, ball joints, anti-roll bar links and bushings wear out much faster than intended. Anti-roll bar links are the most common wear item and typically fail after 50,000-70,000 km.
Advice: Always replace tie rods and ball joints in pairs (left + right). After replacement, always get a wheel alignment. Anti-roll bar links are one of the cheaper jobs and quick to replace - don't neglect them because they affect stability in corners.
6. Release bearing (thrust bearing) and clutch
Symptom: Hissing or buzzing when pressing the clutch pedal. Vibrations in the pedal. In advanced stages: difficulty changing gears or clutch slipping.
The release bearing on the Clio IV 1.5 dCi is hydraulic (CSC, concentric slave cylinder) and integrated with the clutch slave cylinder. This assembly is more expensive than a conventional mechanical bearing and requires gearbox removal for replacement. It typically fails between 120,000 and 180,000 km, depending on driving style and service history.
Advice: When replacing the release bearing, always replace the full clutch kit (disc + pressure plate + bearing) at the same time. The difference in parts cost is minimal and the labour is the same. There's no sense in removing the gearbox twice.
7. Turbocharger - wear and oil leaks
Symptom: Loss of power during acceleration, whistling or whining from the engine bay, blue smoke from the exhaust, oil on the intake side of the intercooler.
The K9K engine uses a small BorgWarner turbo that is generally durable, but after 180,000-220,000 km it starts showing signs of wear, depending on maintenance and engine shutdown habits. Switching the engine off immediately after hard driving accelerates bearing wear in the turbo. Oil leaking through the turbo shaft is the most common symptom.
Advice: Don't switch the engine off immediately after a long drive or motorway run - let it idle for at least 30 seconds. If you notice oil in the intercooler, check the turbo before the oil reaches the DPF and causes a more serious problem.
8. Crankshaft and camshaft position sensors
Symptom: Engine stalls while driving without warning, hard starting, intermittent check engine light. Fault codes P0335 or P0340.
The crankshaft and camshaft position sensors on the K9K engine are known for failing, especially on higher-mileage examples. The cause is usually heat and vibration degrading the sensor's internal winding. The fault can be intermittent: the engine cuts out while driving, then restarts after a few minutes.
Advice: Intermittent engine stalling while driving is a dangerous fault - get it diagnosed immediately. Sensor replacement is relatively straightforward and one of the cheaper fixes, but accurate diagnosis is important because similar symptoms can have other causes.
Clio 4 1.5 dCi DPF regeneration problem
DPF filter regeneration is the process where accumulated soot is burned off at high temperatures inside the filter. On the Clio IV with the K9K engine, automatic regeneration kicks in when the ECU detects a certain level of blockage, but this requires the engine to run on the open road at steady revs for at least 15-20 minutes. Owners who drive exclusively on short city trips never meet this condition.
Symptoms of a failed regeneration start with a mild drop in power and increased fuel consumption, and end with a dashboard warning and limp mode. Forced regeneration with a diagnostic tool is the first option if the DPF is only clogged with soot. If the filter is physically damaged or completely baked solid, replacement is the only way out. Prevention is simple: regularly drive the car on longer trips at 2500+ rpm, ideally at least once a week.
Service and maintenance
The timing belt should be replaced at 90,000-120,000 km or every 5 years (whichever comes first), depending on the year of manufacture and manufacturer recommendation, always together with the water pump. Check your service booklet for the exact interval for your specific model year. Use oil meeting the RN0720 or ACEA C4 specification, viscosity 5W-30. In BiH conditions, we recommend a change interval of 10,000-15,000 km depending on driving patterns (shorter for city, longer for mixed driving), rather than the 20,000-30,000 km Renault recommends for longlife service.
The fuel filter should be replaced every 25,000-35,000 km, depending on fuel quality. The K9K engine is extremely sensitive to fuel contaminants and this filter is the most important preventive measure for protecting the injectors. On Euro 6 variants (K9K 636, from 2015), regularly check the AdBlue fluid level if the vehicle is equipped with an SCR system.
K9K engine oil specification
For the K9K engine in the Clio IV, the mandatory oil specification is ACEA C4 or Renault RN0720, viscosity 5W-30. This is a low-SAPS oil with reduced ash, phosphorus and sulphur content, essential for protecting the DPF filter. Using oil that doesn't meet the low-SAPS specification accelerates DPF clogging and can cause an expensive failure. When buying oil, pay attention to the label on the container - viscosity 5W-30 alone is not enough. The oil must carry ACEA C4 or RN0720 approval.
Owner tips
- Replace the timing belt with the water pump at 90,000-120,000 km or 5 years, depending on the recommendation for your specific model year. The K9K is an interference engine and a snapped belt destroys the valves.
- Check the history before putting down a deposit: use the chassis number to pull the full vehicle history through carVertical. From international registries you'll get actual odometer readings by date, recorded accidents, number of previous owners and indicators of theft or total loss. We consider this essential before buying any used car, especially French imports. When paying for the report, you can use the code GAGA for a 20% discount.
- At least once a week, drive the car 20-30 km on the open road at 2500+ rpm. This is the only way to give the DPF filter a chance to regenerate.
- Replace the fuel filter every 25,000-35,000 km, depending on fuel quality at the pump. K9K injectors are extremely sensitive to contaminants and water in the fuel.
- Use 5W-30 oil meeting the ACEA C4 or RN0720 specification and change it every 10,000-15,000 km depending on driving patterns, regardless of Renault's longlife recommendation.
- Don't switch the engine off immediately after motorway driving - let it idle for 30-60 seconds so the turbo can cool down and you avoid damaging the turbo bearings.
Frequently asked questions
Is the Renault Clio 4 1.5 dCi reliable at 200,000 km?
Yes, the K9K engine is one of the most reliable diesels in the small car class. With regular servicing and timely timing belt replacement, the engine easily covers 250,000-300,000 km. The key is using quality oil of the correct specification and changing the fuel filter at regular intervals.
Which engine is the best choice in the Renault Clio 4?
For BiH conditions, the 1.5 dCi with 90 hp is the optimal choice if you drive at least 15,000 km per year and have a mix of city and open-road driving. If you drive exclusively in the city on short trips, consider the 0.9 TCe petrol. A diesel engine on short trips creates DPF and EGR problems that can cost serious money.
Is it worth fitting LPG on a Clio 4?
The petrol 0.9 TCe version is suitable for LPG conversion and delivers excellent results. The diesel version is obviously not a candidate for LPG. If you're considering buying a Clio IV and planning LPG, go for the petrol version and get in touch for a consultation on the installation.
How much does a timing belt replacement cost on a Clio 4 1.5 dCi?
The timing belt is replaced together with the water pump, tensioners and auxiliary belt. This is a mandatory service that should not be postponed. The K9K is an interference engine, meaning a snapped belt destroys the valves and cylinder head. The cost depends on the specific condition - get in touch for a quote.
Why does a Clio 4 dCi lose power and trigger the check engine light?
The most common causes are a clogged EGR valve, blocked DPF filter or a faulty turbo. Diagnostics with a fault code read is the first step, as the specific code points to the exact cause. Don't ignore these symptoms because limp mode limits power to roughly half and can cause additional problems if you drive for an extended period in that state.
Does the Clio 4 have electronics problems?
The Clio IV has known issues with the ECU (Delphi DCM1.2) which can fail suddenly, as well as with central locking and electric window regulators that occasionally stop working. These are not systematic faults on every example, but they're common enough to check when buying. Test all functions, keys and remote locking.
What should I look for when buying a used Clio 4 1.5 dCi?
Check when the timing belt was last replaced (the interval is critical), test the DPF operation with a short test drive on the open road, listen for suspension noises over bumps, and make sure the diagnostic tool can communicate with the ECU. Ask for the service booklet because a regularly maintained K9K is a long-lasting engine.
If you notice any of these symptoms, stop by the workshop - it's better to check early than to pay for an expensive repair.