How to effectively maintain the engine of your Audi vehicle?

I've recently purchased an Audi and I want to make sure that I maintain its engine properly. What are some key things to keep in mind?

Regularly check and change your engine oil according to Audi's recommended intervals.

Use only high-quality fuel and always keep your gas tank at least half-full to prevent condensation.

Don't ignore any warning lights on your dashboard and address any issues as soon as possible.