What are the potential causes of excessive oil consumption in a BMW 5 Series?

I have noticed that my BMW 5 Series is consuming more oil than usual. What could be causing this issue and what steps should I take to address it?

One possible cause of excessive oil consumption in a BMW 5 Series is worn piston rings. It is important to regularly check and replace worn piston rings to prevent further damage to the engine.

Another potential cause is a leak in the valve cover gasket. This can result in oil leaking out of the engine and should be repaired as soon as possible.

Clogged crankcase ventilation system can also contribute to excessive oil consumption in a BMW 5 Series. It is recommended to have the system checked and cleaned regularly to prevent any issues.