Navara 2019 model, currently has over 60,000 kilometers. When changing the spark plugs, there was oil in the cylinders. The 4S technician said the valve cover needs to be replaced due to internal leakage and should be replaced together. I want to ask everyone, is this a common issue with the Navara?

It definitely isn't, does your car burn oil? If it doesn't, it might just be a slight seal issue with the valve cover. The seal is a rubber ring, which can age over time. However, if you take care of it regularly, it shouldn't be a problem. You should know that the valve cover of a BMW is considered a wear-and-tear part and needs to be replaced every 100,000 kilometers. Brother, make sure to pay more attention to maintenance.