How do I know when to change my Audi A1's brake pads?

My Audi A1 is due for a service soon and I'm wondering if I should also get the brake pads changed. How do I know when it's time to change them and what signs should I look out for?

It is recommended to check your brake pads at least once a year during your regular service. However, keep an eye out for any signs of wear and tear such as squeaking or grinding noises when braking, longer braking distances, or a vibrating steering wheel. If you experience any of these symptoms, it is best to get your brake pads checked and replaced as soon as possible.