Hi folks need help and advise as this is really peeing me off I know ibizas are not the best made cars but im having real problems finding this fault on my 130bhp Ibiza sport Basically when the cars cold there a rattle which seems to be coming behind the dash board (engine maybe) every time I go over a bump (sounds like a plastic knocking noise ) . But it goes away when cars fully warmed up , as my car takes around 20 min/ 8 miles to warm up and most off my driving is short trips it really annoying I know is not engine cover ( took it off) Anti roll bar drop links had them replaced Wishbone bushes replaced with cupra hard ones Could it just be engines rough as its cold weather and it takes time? Engine mounts ? All I know it goes away when warm ????? Lots of garages cant diagnose the problem most just tell me parts to replace but don’t want to throw money at the dam ting even thinking of selling the car! Any help please !!!!!!!!