The timing chain of the Renault Kadjar 1.2 TCe stretches prematurely at 30,000 to 50,000 kilometres, causes ticking noises and can lead to serious engine damage due to worn chain tensioners. This well-known issue mainly affects models built between 2012 and 2016 and requires vigilance from owners. Read on to find out how to recognise the warning signs in good time and what you can do.
Why does the timing chain stretch so quickly?
In theory, the 1.2 TCe engine was fitted with a maintenance-free timing chain. In practice, things turned out differently. The chain is exposed to high loads in combination with long service intervals of more than 20,000 kilometres. This causes the chain to stretch and the tensioners to wear out faster than intended.
Manufacturing defects in early versions of this engine also play a part. The same technology was used in models such as the Clio, Captur and Mégane, where similar problems occur. In addition, high oil consumption due to worn piston rings or dirty cylinders can indirectly damage the chain. If the oil level drops too low, wear increases further.
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How do I recognise a slack timing chain?
A faulty or stretched timing chain gives off clear signals. If you recognise these symptoms at an early stage, you can prevent serious engine damage. Watch out for the following signs:
- Rattling or clattering noise on a cold start or at raised idle speed
- Engine warning light on with a fault code in the engine management system
- Rough or unstable idling, juddering or loss of power
- Ticking noises and misfiring at high revs
Owners report that these symptoms often appear as early as between 32,000 and 80,000 kilometres. In some cases this even concerns cars that are only 32 months old. Rattling on cold starts is a frequently heard early sign pointing to chain stretch.
Do not ignore these symptoms. A stretched chain can disturb the valve timing, causing valves and pistons to come into contact. This leads to expensive engine damage that sometimes makes a complete engine replacement necessary.
When should the timing chain be replaced?
The advice is to have the timing chain checked or replaced between 80,000 and 150,000 kilometres. However, if there are symptoms, you should act sooner. Do not wait until the problems get worse, as you then run the risk of total engine failure.
Many owners of the Kadjar 1.2 TCe report that the chain fails much earlier. Cases where the chain has to be replaced at 32,000 kilometres occur regularly. Some owners even have to replace the chain a second time after 80,000 kilometres, which points to structural problems with this engine component.
In case of doubt or symptoms, mechanics advise having the chain inspected immediately. A visual check during a service can show whether the chain has stretched or whether the tensioners and guides are worn. When buying a used car from the 2015–2016 period, always ask about the replacement history of the timing chain.
What are the costs of a timing chain repair?
The costs for replacing the timing chain are between 1,000 and 1,500 euros. This price includes around 12 hours of labour, because the engine has to be removed from the car for this repair. The high labour intensity makes this service visit more expensive than for many other engine components.
In severe cases where the chain has already caused engine damage, the costs can rise further. Owners report complete engine replacements costing around 4,500 euros at a mileage of 85,000. Sometimes there is additional damage to the turbo due to a low oil level, which further increases the total cost.
Some dealers offer goodwill for known problems. This can amount to up to 85 percent discount on the repair costs. However, you should still reckon with a personal contribution of 300 to 400 euros. This goodwill usually only applies within the warranty period or shortly afterwards.
‘ Many owners advise avoiding this model because of the recurring timing chain problems. ’
Practical tips to prevent problems
Preventive maintenance significantly reduces the risk of timing chain problems. Keep a very close eye on the oil level and change the oil more often than the standard service interval prescribes. An interval of 10,000 to 15,000 kilometres instead of 20,000 kilometres helps to keep the chain in good condition for longer.
Listen carefully to noises on cold starts. Rattling is a direct sign of wear and must not be ignored. Choose shorter service intervals, especially if you drive high mileages or mainly in town. Stop–start traffic puts extra strain on the engine.
When buying a second-hand Kadjar 1.2 TCe, always check whether the timing chain has already been replaced. Ask for maintenance records and have the car inspected before purchase. Many owners recommend avoiding this model because of the recurring timing chain problems.
Owners’ experiences with timing chain failures
Owners of the Renault Kadjar 1.2 TCe regularly share their frustrations about the timing chain. A frequently heard experience concerns a 32‑month‑old car with only 32,000 kilometres on the clock, where the chain failed. The mechanic stated that the car could no longer be driven because of the risk of immediate engine damage.
Another owner reported that after replacing the chain at 80,000 kilometres, the new chain again caused problems. In addition, the turbo also had to be replaced due to a low oil level. This double repair led to the decision to get rid of the car.
In a severe case the engine failed completely at 85,000 kilometres, resulting in repair costs of 4,500 euros. These stories highlight that the timing chain of the 1.2 TCe engine is a structural weak point that owners need to take into account.
Is the Renault Kadjar 1.2 TCe still reliable?
The reliability of the Renault Kadjar 1.2 TCe is strongly affected by the timing chain problem. Without preventive maintenance this component can lead to unexpected and expensive repairs. For owners this means that extra vigilance is essential.
Those who recognise the symptoms in good time and act quickly can prevent more serious damage. Regular servicing with shorter intervals and strict monitoring of the oil level are indispensable. For potential buyers of a used example, a careful check of the service history is advisable.
The 1.2 TCe engine has positive sides, such as its fuel efficiency and sufficient power for everyday use. However, the timing chain problem demands conscious choices and proactive maintenance if you want to enjoy this model without financial surprises.
‘ Stay informed and avoid nasty surprises by visiting our website regularly. ’
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Frequently asked questions
The main causes are a stretching timing chain due to long service intervals and aged or dirty engine oil, in combination with the relatively high loads in the 1.2 TCe engine. In addition, faulty chain tensioners, wear or breakage of guides and sprockets also play a role. High oil consumption (for example due to worn piston rings or dirty cylinders) can put extra strain on the chain and cause it to wear out more quickly. Finally, there are indications of manufacturing defects in early series of these TCe engines, which make the chain design more prone to problems.
Typical symptoms of a worn timing chain are a rattling or clattering noise (especially on a cold start), poor or irregular idling, loss of power and the engine warning light coming on. Ticking noises and juddering at higher revs can also indicate that the chain has stretched or that the tensioner/guides are worn. If the chain is replaced in good time, repair costs are usually around €1,000–€1,500, mainly because of the high number of labour hours. If you act too late and there is consequential damage (such as engine damage), the costs can rise to several thousand euros.
A faulty or stretched timing chain can cause the valves and pistons to move out of sync, so that they can collide. This can lead to bent valves, damaged pistons, broken valve guides and even a completely seized or irreparably damaged engine. Related components such as chain tensioners, guides and sprockets can also be damaged, further increasing the extent of the damage and the repair costs. In severe cases, replacement of the complete engine is required.
Yes, preventive measures are mainly focused on good and timely maintenance. Check and change the engine oil more frequently than the standard interval (for example every 10,000–15,000 km) and keep a close eye on the oil level. Listen for rattling or clattering noises on cold starts and have the timing chain checked immediately if you notice suspicious noises or fault codes. When buying a used car, it is wise to check the service history and any previous replacement of the timing chain.
When buying, pay attention to a cold start: listen for any rattling or clattering noise from the engine, especially in the first few seconds. Check in the service book that the oil has been changed at least every 10,000–15,000 km and that there are no notes of high oil consumption. Ask explicitly whether the timing chain has already been checked or replaced and, if necessary, have it assessed by an independent specialist before purchase. Consider carefully whether to avoid an example from the problem years (around 2012–2016, model years 2015–2016) if the history cannot be fully documented.