In recent years, the news about German car burning oil has become less and less, and gradually made consumers' inherent impression of German car burning oil much lighter. However, just when the situation has improved, the recent problem of burning oil in bmw's B48-TU engine can be said to be very popular.
Since the second half of last year, some car owners have felt that the oil consumption is abnormal, and after the relevant forums and car owners have said their own situation, they have found that it is not a simple case, and many car owners have encountered the same situation as themselves. Then things continued to ferment on the Internet, some through radio stations, some through complaint websites, and within a few months, news about BMW's burning of engine oil had spread throughout major automotive websites. However, even if everyone knows it, BMW officials seem to be indifferent to this and continue to turn a blind eye to the problems encountered by the owners.
After seeing BMW China's attitude, the intolerable car owners decided to jointly issue relevant statements and defend their rights on their own, hoping to force BMW to give a reasonable answer and solution through the media.
The engine model that has problems is BMW B48-TU, which is an upgraded model based on the original B48 in 2019, and is currently widely used in the 3 series, X3, 5 series, 7 series, X5, because the 3 series is the first to start applying the engine and the amount is relatively large, so the number of owners in question is also the largest.
From the description of some of the owners of the problem, it can be known that the situation of burning oil can be described as serious, because many are still in the state of quasi-new cars, and the mileage has not even exceeded 10,000.
A car owner who bought the BMW III Series 325Li in September 2019 described that he saw abnormal oil consumption before the first insurance of 10,000 kilometers, the pointer has dropped to a quarter of the position, after going to the 4S store for the first insurance, organic oil traces were found after removing the spark plug, and there was also obvious carbon deposition in the cylinder. After complaining to the 4S shop, the plan to replace the valve chamber cover was given, but the problem was still not solved after the replacement, and the oil still appeared after running for 3,000 kilometers, and after driving 7,000 kilometers, it dropped to a quarter position again.
In terms of 4S stores, instead of fulfilling the duty of solving problems for customers, they have played opportunistic. According to the instructions of the 3 series, the amount of oil refueled for normal maintenance is 5.25L, but according to some car owners, the 4S shop has injected 5.75L of oil without telling, and even some owners have to pay more for the 0.5L oil. BMW dealers this behavior is undoubtedly to cover up the fact of burning oil, after all, only look at the height of the oil in the car, plus 5.25L and plus 5.75L will show MAX, dealers are trying to alleviate the fact of burning oil and lengthen the time spent burning oil, so that they have more arguments to justify.
As the so-called long-term illness has become a doctor, the owner of the B48-TU engine has analyzed the engine failure on his own after not getting help. Presumably the source of the problem is due to a design flaw in the engine's oil-gas separator design. Due to the use of a labyrinth-type oil and gas separator, the work efficiency is relatively low, the oil vapor can not return to the oil system in time, so this combustible gas mixed with oil enters the engine combustion chamber, resulting in the situation of burning oil, which is why the spark plug will have oil stains. This type of burning oil is very common in the past German cars, such as the world-famous second-generation EA888, and many of the reasons for burning oil are the pot of the oil and gas separator.
Until now, the problem of B48-TU burning engine oil has not been effectively solved. But I also know why BMW is doing this, after all, even if there are problems with its own products, sales are still unabated. In the first two months of this year, the 3 Series sold more than 30,000 vehicles, and the X3 also came to 24,000 units, so excellent sales results, it is no wonder that BMW's attitude is to care about it. I have to admit that domestic consumers are too tolerant of this kind of first-line luxury brand, and no matter how many problems there are, they will not worry about sales.