Had lots of rattles and noises on my car but after fitting a subwoofer and uprated speakers they seem to have disappeared? It's odd I know but maybe the weight in the back of the boot does something

Maybe when you removed and re fitted the door card youve fitted them better than they were.

The sound from said system drowns out the noises???!!!!.......

Shot in the dark here......maybe you are right.....the extra load in the back helps the rear suspension do it's job as the backs of the Fabia are a bit light????

Also as the above poster!

My girlfriend found this solution years ago.

"how longs the car been making that noise?"

"dunno - whenever i hear it I just turn the radio up" :S

I am afraid to say I have to agree, my girlfriend is shocking for not telling me when she has problems with her car and ignoring them until one day like this week she cannot start it...