How do I know if my Audi A4's engine oil needs to be changed?

I am not sure when the engine oil in my Audi A4 needs to be changed. Can someone provide some guidance on what to look for or how often it should be changed?

The best way to determine if your engine oil needs to be changed is by checking your vehicle's maintenance schedule. It is generally recommended to change the engine oil every 5,000 to 7,500 miles, but this may vary depending on your driving habits and the type of oil you use.

You can also check the oil level and color by using the dipstick. If the oil is below the minimum level or appears dark and dirty, it is a good indication that it needs to be changed.