Hi can anyone help with this problem.  The brake pedal on my fabia has progressively got firmer to the point now where it's very hard to stop. Any help would be appreciated, thanks 

Your brake servo is not getting any vacuum because there's a leak in the pipe, there will be splits where the hard plastic is shrunk onto the barbs.

Very common problem.  I find it quite surprising these days when I come across a (VW group) car that hasn't got some degree of splitting in these areas. Some are just hideous/obvious but it can be quite subtle in the early stages.  Look/feel on the underside as well as visible parts.

Here's an end-stage one on a mk4 golf; sounds like yours may well be similar.

 

 

Edited 21 August, 20205 yr by Wino