What is the most common cause of engine failure in the Audi A7?

I recently bought an Audi A7 and I'm concerned about the possibility of engine failure. What should I be aware of and how can I prevent it?

The most common cause of engine failure in the Audi A7 is due to oil sludge build-up. This can be prevented by regularly changing the oil and using high-quality synthetic oil.

Another potential cause of engine failure is a faulty high-pressure fuel pump. It's important to have this component checked regularly and replaced if needed.