The quiet and stable "song" of the motor pleases the driver's ear. But some of the modern engines will not sing for long, their limit before the first overhaul is 100,000 kilometers.
And so that you do not face such a nuisance, avoid cars with an engine that fell into the top 5 most unreliable engines according to the Car and driver edition.
5. BMW N 63b44
This modern 8-cylinder power unit complies with the Euro 5 environmental standard, boasts a large volume of 4.4 liters and an impressive power of 400-462 hp.
Its production has been established since 2008, but the design was not very successful, since the catalyst with exhaust gases is very close to the last cylinder and often causes it to overheat. Because of this, BMW N 63b44 may fail after 40 thousand kilometers.
An option to avoid this situation is to drive carefully, avoiding overheating. Also, automotive specialists can cut out the catalyst by installing a flame arrester instead.
Another common problem with these motors is the sudden death of the oil pump. This is independent of the engine modification and is probably a factory defect.
4. Volkswagen 1.4 TSI
The five most unreliable engines according to the Car and driver version includes the popular low-volume engine installed on many Volkswagen cars (Tiguan, Golf, Polo, etc.). After 50-100 thousand kilometers, he needs to replace the timing chain.
The surest signal that it is time to change the chain is the crackling it emitted. Here is a typical example.
And to find out about the state of the chain not by ear, you can use computer diagnostics in a car service.
In addition, VW TSI engines are prone to eating high-quality oil and take a long time to warm up.
3. Mercedes-Benz М271 Е18 ML / AL
Mercedes cars were equipped with these engines in 2002-2015. Their main problem is the stretching of the timing chain, and this happens even before the car has traveled 100,000 km. In later engine modifications, this problem was eliminated.
Another defect of these engines is that the oil filter housing is too light. These savings lead to rapid wear on the inner liner of the part.
And finally, the third common problem with the M271 is associated with the ventilation system, the pipes and hoses of which, according to automotive experts, are made of not very high-quality materials.
2. Ford EcoBoost
These turbo engines debuted relatively recently - in 2010 - but their reliability is so low that Henry Ford himself, the founder of Ford, if he were still alive, could say to modern engineers: "I'm ashamed of you!"
EcoBoost powertrains often break down before overcoming the one hundred thousandth mark.
- The problem with 1 liter units lies in the defective hose in the cooling system. It bursts at high temperatures. This problem was encountered by 44,682 cars equipped with Ford EcoBoost. The company said that 96% of the cars were recalled and the problem was fixed.
- 1.6-liter engines have another problem - local overheating of the cylinder head, which can lead to the release of engine oil under pressure. About 15 thousand engines faced such a problem, however, only a few of them caught fire, and no one was injured. Ford has replaced the defective parts and added an audible warning when the engine overheats.
1. Peugeot-Citroen EP6 (Prince)
The first place on the list of automobile engines that break down most often went to the brainchild of the second largest automaker in Europe and BMW engineers who helped in its development.
Despite joint efforts, the creation of PSA and BMW was unsuccessful. His timing mechanism quickly wears out, and this "Prince" eats oil as if not to himself. Already at a run of 40 thousand km, many motorists began to hear the rumbling sound of the timing belt, which symbolized the problems that had arisen there.
not a single Japanese ...