As much as I am happy with my Focus the one thing that bugs me is the amount of rattles, knocks and creaks that come from the interior trim (not mechanical noises) so I am on a mission to find and fix as many of these as possible. I thought it might be useful to have thread to post found fixes, so I shall start off . . .
Underside of rear seats (hatchback)
Attached to underside the cushion of the rear seats are two foam rubber pads, the purpose of these is to stop the metal of the underside of the seat cushion hitting the metal of the floor. Mine had broken and come away from the cushion, on the other side the pad was totally missing, the solution was to buy a roll of 8mm foam rubber with self adhesive backing off eBay and make some new pads, I even added extra pads for good measure – one rattle / knocking fixed. Photo shows new pads fitted.
Rear parcel shelf (hatchback)
Although the parcel shelf has two little rubber pads attached to the sides mine was still rattling and knocking particularly on poor surfaced roads. I then noticed at the back of the shelf (near rear window) the plastic ledge where the shelf sits was worn slightly on both sides where the self repeatedly hits and rubs. The solution again 8mm foam rubber with self adhesive backing and to make two little pads to cushion the shelf. Another rattle / knocking fixed. Photo shows one pad fitted (nearside).
Driver’s door window rattle
I have also posted this in another thread, have still yet to find a fix for this