How to troubleshoot poor braking performance in an Audi A4?

I have noticed that my Audi A4's braking performance has been deteriorating. What could be causing this issue and how can I rectify it?

There are several possible reasons for poor braking performance in your Audi A4. One potential cause could be worn brake pads or rotors, which will need to be replaced. Another possibility is air in the brake lines, which can be resolved by bleeding the brakes. Additionally, low brake fluid levels can also affect braking performance, so make sure to check the fluid level and top it up if necessary.

Another common issue with Audi A4 brakes is the brake calipers sticking, which can greatly affect performance. If this is the case, the calipers will need to be replaced or serviced. Additionally, corroded or worn brake lines can also lead to poor braking performance, so it's important to have them inspected regularly and replaced if necessary.