I bought my immaculate 2006 3.2 Brera a few weeks ago, 18k on the clock (yes really!) and it came with a knocking noise from the front right. I checked various websites and took it to the local dealer where we agreed the 'bushings' would be replaced. Well it cost £450 including labour, but it is fine now.
I asked the mechanic to check out the inderside and he pronounced it the best Brera he had ever seen - no rust.
Mind you, I don't think the previous owner ever took it out in the rain!