Car makes knocking noises when I brake, what could it be?

[Nighbynight]

It has just come back from the garage, having been repaired after an accident. When cold, the engine sounds like normal - but after I have driven for around 50 km, when I brake there is a sinister knocking sound under the bonnet.
Not linked with going round corners - could it still be the bearings?

I am going to take it back to the garage, but would like to be a bit clued up beforehand.
Can anyone suggest anything it might be??

it's the pixies

Its purple a Ford Fiesta, 12 years old btw.

Ill just give them a quick pixicide spray, then shall I

here you go

EEk! thats scarey. I drove to Munich down the autobahn today too

sounds like your brake pads may be worn down

It was fine before it went to the garage

Hmmn, you need to brake harder, before you hit things.

Br Ive just paid them 1850 euros too.

They do go "all of a sudden" - don;t do what I did and leave it for ages, otherwise it'll f*ck your disks up as well (and that's the expensive bit - dp was not best pleased !)

thank you everyone!

better take it back tomorrow then, sigh.

the guy from the garage drove it around for a bit and said it is not the brakes, it is a cable that has been put back wrongly, so when you brake it is slack and knocks. I couldnt understand more, because he was saying a lot of technical words that I didnt understand (he was speaking german). Anyway, they are going to fix it and rehouse the pixies