How do I fix a malfunctioning brake system on my Vauxhall Astra?

I have noticed that my brake pedal feels spongy and does not provide enough stopping power. There is also a grinding noise coming from the brakes. What could be causing this issue and how can I fix it?

It sounds like your brake pads may be worn out. You will need to replace them as soon as possible to ensure the safety of your vehicle and yourself.

Another possible cause could be air in your brake lines. Bleeding the brake system can help resolve this issue. If you're not comfortable doing it yourself, I recommend taking your car to a trusted mechanic.

In some cases, a faulty brake caliper can also cause these symptoms. It is important to have it checked by a professional and replaced if necessary.