The Nissan Qashqai diesel suffers from known engine problems that occur regularly. The 1.5 dCi and 2.0 dCi engines in particular are prone to EGR contamination and timing belt failures. Soot filter blockages are also common. These issues occur more often on older models with high mileage. With the right maintenance you can prevent a lot of trouble. Time to list the main weak spots.
EGR contamination on the 1.5 dCi engine
The 1.5 dCi engine uses an EGR valve that routes exhaust gases back to the intake. This valve gets dirty when the car is mainly used for short trips. This causes complaints such as loss of power, an irregular running engine and a check engine light.
You can recognise EGR contamination by vibrations while accelerating. The engine may also fail to deliver power from 3,000 rpm upwards. Sometimes the mass air flow sensor also plays up. A small crack in the intake manifold (the plastic part that channels air to the engine) can give similar symptoms.
Clean the EGR valve preventively to avoid problems. In case of severe contamination it may need to be replaced. Regularly take a longer drive of at least 20 minutes at speed. This gets the engine properly hot and slows down EGR valve contamination.
‘ However, that is too risky. ’
When to replace the timing belt
The 1.5 dCi has a timing belt. You must replace it every 60,000 to 70,000 kilometres, or every 4 to 5 years. Nissan itself specifies longer intervals, up to 100,000 kilometres. However, that is too risky.
A broken timing belt causes valve and piston damage (the valves and pistons in the engine then collide with each other). The engine will no longer run and you are faced with an expensive repair. Mechanics recommend replacing the belt earlier than the manufacturer prescribes.
Always check the service book for a used Qashqai. Is there no proof of belt replacement? Then have the belt replaced straight away before you clock up many kilometres.
Bearing damage due to overly long oil change intervals
The 2.0 dCi engine in particular is prone to bearing damage (wear of the metal bearings that support the rotating parts in the engine). This is caused by oil change intervals that are too long. Nissan advises an oil change every 30,000 kilometres or every 2 years. However, that is far too late.
Dirty oil leads to failure of the big-end bearings (the bearings that connect the pistons to the crankshaft). This often happens around 200,000 kilometres. With shorter intervals of 10,000 kilometres the engine can last 500,000 kilometres. Check the oil level weekly, especially on high-mileage engines.
You will hear knocking noises from the engine if the bearings are damaged. This is especially noticeable on a cold start. In doubt? Have a mechanic listen and check the bearings. Repair is expensive, as this requires an engine overhaul which will quickly cost €3,000 or more.
Problems with the soot filter
The soot filter, also known as the DPF (Diesel Particulate Filter), traps soot particles from the exhaust gases. With many short trips the filter becomes clogged. This is most common on Qashqai models from 2007 to 2010 with the 1.5 or 2.0 litre diesel.
Recognisable complaints are:
- Loss of power while driving
- Check engine light is on
- Engine runs irregularly
- Higher fuel consumption
The soot filter has to burn itself clean through regeneration (a process in which the engine becomes extra hot to burn off soot). This happens during longer motorway drives. Therefore drive at least 20 minutes a week at motorway speed (at least 100 km/h). If that is not possible, a garage can perform a forced regeneration (burning the filter clean manually using special equipment).
In cases of extreme blockage, regeneration no longer helps and you must have the soot filter cleaned or replaced. This costs between €500 and €1,500.
‘ Replacing injectors will quickly cost €1,000 to €2,000. ’
Defective injectors on the 2.0 dCi
The 2.0 dCi engine sometimes suffers from defective injectors (fuel injectors that spray the diesel into the engine). This mainly happens on high-mileage cars and with poor fuel quality. Injectors are sensitive to contamination.
You will notice it through a rough-running engine, smoke and loss of power. The engine is difficult to start or stalls while driving. Always use good diesel from reliable filling stations (preferably from the major brands with standard quality). Regularly add an injector cleaner to the fuel.
Replacing injectors will quickly cost €1,000 to €2,000. Have a diagnosis carried out with an OBD scanner (On-Board Diagnostics scanner, a device that reads fault codes from the engine management). This allows you to check which injector is causing the problem.
Turbo problems on older diesels
Turbo failure (faults in the turbocharger, the component that forces air into the engine) occurs regularly on older Qashqai diesels. The turbo becomes damaged by dirty oil or insufficient maintenance. The turbo needs clean oil for lubrication and cooling.
Symptoms include whistling noises and smoke. There is also a clear loss of power. In severe cases you will see blue or black smoke coming from the exhaust. Check whether the oil filter and oil have been replaced on time.
Prevent turbo problems by changing the oil every 10,000 kilometres. After a long drive always let the engine idle for a few minutes before switching it off, so the turbo can cool down. A new turbo costs between €1,000 and €2,000.
Reliability by generation
Not all Qashqai generations are equally reliable. The first generation from 2007 to 2013 has the most engine problems and electrical faults. Models with high mileage above 150,000 kilometres are particularly risky.
The second generation from 2014 onwards is better. However, the 1.5 dCi remains sensitive to maintenance issues. After 2017 fewer ECU faults (faults in the Engine Control Unit, the engine computer that controls engine functions) have been reported. If in doubt, choose a model from after 2017 with a full service history.
Always check whether recall actions have been carried out. There have been recalls for the radiator fan. In addition there have been actions for ECU reprogramming (resetting the engine software) for the oxygen sensor.
‘ Replace the timing belt every 60,000 kilometres, not every 100,000 kilometres as Nissan states. ’
Practical maintenance tips
Ignore the factory recommendations for maintenance and adjust them. Change the oil every 10,000 kilometres instead of every 30,000 kilometres. Replace the timing belt every 60,000 kilometres, not every 100,000 kilometres as Nissan states.
When diagnosing loss of power, start by checking the MAF sensor (mass air flow sensor, which measures the amount of incoming air) and the air filter. Use an OBD scanner (On-Board Diagnostics scanner) to read fault codes from the engine management. Some problems are easy to solve with a clean air or MAF sensor or a new air hose.
Buying a used Qashqai diesel? Then pay attention to the following points:
- Choose models from after 2017 with a full service history
- Test for rattling noises that may indicate timing chain problems
- Check oil consumption and ask when the belt was replaced
- Have the condition of the soot filter checked at a garage
- Avoid models with more than 200,000 kilometres without proof of belt replacement
If you follow these maintenance tips, you will significantly reduce the risk of major repair costs. Arrange regular checks with a reliable mechanic and keep all maintenance documentation carefully. If you are unsure about the condition of important parts such as the timing belt, turbo or injectors, it is better to replace them preventively than to be faced with high bills afterwards.
Frequently asked questions
Early symptoms include loss of power, jerky acceleration and an illuminated engine warning light, often caused by a clogging DPF or a dirty air/MAF sensor. Also watch out for unusual smoke (blue or black) and whistling or whining noises when accelerating, which can indicate turbo problems. Ticking or rattling noises from the engine block, especially on a cold start, may point to wear on bearings or the timing belt/chain. Excessive oil consumption, having to top up regularly and a rough idle are also early warning signs.
Have the oil and filters changed more frequently than the factory recommendation (for example every 10,000 km) and check the oil level regularly. Replace the timing belt preventively at around 60,000–70,000 km or every 4–5 years. Take a longer motorway drive every week (approx. 20 minutes) to prevent DPF blockage and to protect the turbo. In addition, have the intake/MAF sensor checked and cleaned periodically if there is loss of power or rough running.
The most common repairs for diesel engine problems on the Nissan Qashqai are DPF cleaning/replacement, turbo replacement, timing belt replacement and, in severe cases, engine overhaul due to bearing damage. On average, a DPF repair or replacement costs around €500–€1,500 and a turbo replacement about €1,000–€2,000. A full engine overhaul in cases of severe engine damage is usually above €3,000. Preventive replacement of the timing belt (including labour) is often between €500 and €900, depending on engine variant and garage.
Yes, certain parts of the Nissan Qashqai diesel engine cause problems more often. The soot filter (DPF), the turbo, the timing belt and the bearings (big-end bearings) are particularly well-known weak spots. In addition, issues with the mass air flow sensor/intake system and excessive oil consumption on the 1.5 dCi are relatively common. Regular and timely maintenance greatly reduces the likelihood of these engine problems.
