How do I maintain my Audi A6's engine?

I have recently purchased an Audi A6 and want to make sure I properly maintain my car's engine. What steps should I take to ensure my engine runs smoothly and efficiently?

Regularly check and change your engine oil. This helps to keep your engine clean and lubricated, improving its performance.

Keep an eye on your coolant levels and make sure to replace or top up when necessary. Coolant helps to regulate your engine's temperature and prevents overheating.