Why is brake pedal hard to push?

What is your question?

Brake pedal is hard to push. Very little brake stoppage when applied. No warning light or trouble prior to problem. Brake pads getting close to replace. 125,000 miles. Emergency brake works. wife had similar problem with a buick. Problem was anti-skid device.

What makes this problem better or worse?

nothing

How long has your 2006 Audi A4 Quattro had this problem?

just happened