My car has started to make a really loud knocking noise when driving and seems to go away for a second when touching the brake or accelerator. I thought it might have been the driveshaft. But i took it into fiat and they are replacing the wheel bearing under the warranty which is good but said the driving flange is gone and needs replaced but im going to get that fixed elsewhere as they are charging £130 and tbh i dont have the money cos my car was in fiat last week and needed the steering column replaced and timing belt and i think its just the labour that is costing so much. Anyone have an idea of how much a driving flange is? and what it is?