In fact, the overall common problems of BMW are around the engine.
In fact, the overall failure rate of 5 Series G chassis is lower than that of F chassis.
F chassis leaks both oil and water, and G chassis basically does not leak oil. Now it is mainly oil leakage.
1? The machine filter base leaks water because the antifreeze will leak from this position after the plastic sealing ring on the machine filter base is damaged. The solution is to replace the filter base of the machine with a new one.
2 The water pump leaks. The water pump of G38 has been changed from the previous generation electronic water pump to the present mechanical water pump. Although the problem of water leakage has not been solved, the maintenance cost has been greatly reduced. The price is basically half that of an electronic water pump.
The heat exchange management module is bad. After the failure, the fan will always be running for a long time. Maintenance costs are high, and components need to be replaced.
4 the kettle leaks, and the edge of the kettle is the leakage point. This can't be repaired, it needs to be replaced to solve it!
Many people say that the water leakage is so serious because the supplier Mahler's parts are of poor quality.
In fact, this is all superficial, and the high water temperature is the core reason. As long as the water temperature is high, the life span of any seal will be shortened!
Another problem is the combustion of engine oil.
Actually, the previous model of G38 didn't burn much oil. The engine of B48TU was replaced after the 2 1 model, and the engine started to burn oil.
(B48TU)
The main reason is that there are design defects in the valve cover, which will lead to cracks, and oil and gas will enter the airway and be directly produced in combustion, resulting in engine oil combustion.
The phenomenon is that the spark plugs of cylinders 1 and 2 produce carbon deposits. The solution is to replace the valve cover and spark plug with new ones.
B48TU is an improved version of B48, but there is still oil burning caused by this low-level error. It is really inappropriate for BMW to add more oil. Things are good, but the attitude will make loyal BMW fans a little sad.
In fact, these are the common questions that can be called out in the whole 5 series. The expenses are basically above 1 10,000 yuan. But don't forget, the 5 Series is a 500,000-class model, and I don't think the cost is too high.
Therefore, whether it is water leakage or oil leakage, compared with its performance and the feeling brought to the driver, these faults are more beneficial than harmful. It can even be said that it is not worth mentioning.
Even today in 2022, it is a 2.0T engine with higher power than BMW. But few can achieve the smoothness of BMW engine, which is still in the first echelon.
I'm boss Yang. I need to talk to you.
This article comes from the author's Chengxin car shop, and the copyright belongs to the author. Please contact the author in any form. The content only represents the author's point of view and has nothing to do with the car reform.