Now i know this is a very big long shot but might aswell ask ,i have a rattle that comes from the passenger side i think and you can hear it when your over 60 mph under that fine bumpy roads fine this is on smooth good roads ,so seems wind related, i have check plastic wheel liners  ,engine tray and as much as i can get to under the bonnet still can,t fined anything, anyone else have any ideas its driving me nuts cheers rick

Sorry should of said 68 plate car 8000 miles from new 

Welcome to owning a fiesta, I also seem to have recently developed a rattle on the passenger side, (possibly the dash / A-post area) almost 10,000 miles seems to come part and parcel with owning a Ford 🤣

Isn't it something to do with heater pipes going through bulkhead solved by a tie wrap can't find thread.

Well i spent a good few hours on this yesterday, took the engine under tray off again checked everything found nothing ,plastic underfloor panels seemed a little lose so tighten when up ,checked everything under the car nothing, now there is a plastic filled bag inside the wing factory fit but does seem to move about and makes a nosie so have placed a large sponge in the to stop any movement, if thats the problem will fit it bagged up so doesn't hold water ,will check heater pipes

23 hours ago, st line x 140 driver said:

Isn't it something to do with heater pipes going through bulkhead solved by a tie wrap can't find thread.

I think it was related to the mk8 ecoboost fiesta only, and by the way, you don't to use the tie wrap anymore, ford knows about it , they got TSB for it, here in Egypt they replaced what they call ( O- rings ) for those heater pipes according to the TSB, and the problem gone away forever 🙂