How do I properly maintain my Audi A7's engine?

I just bought a used Audi A7 and I want to make sure its engine stays in good condition. What are the necessary steps and precautions I should take to properly maintain its engine?

Regularly change the engine oil and oil filter. This will keep your engine running smoothly and prevent any buildup of dirt and debris.

Check and replace the air filter as needed. A dirty air filter can decrease engine performance and increase fuel consumption.

Listen for any unusual sounds or vibrations while driving. If you notice anything, bring your car to a trusted mechanic for a thorough inspection.