OK so it might just be bad luck but my 2020 focus hatchback has got a really annoying rattle at low speeds and I've worked out that it's the rear seat back latching mech. It seems to have a bit of play in it that allows the seat back to rattle a bit. It's doing my spud in and I just wondered if anyone else had been experiencing the same and sorted a fix. Ta, stressed of Derby. 

I folded some cardboard up over the metal bar thing on the back seat so when its shut back it's nice and tight

I'll give it a try, thanks A

I frequently get an annoying rattle coming from the front passenger seat but it always stops as soon as the wife gets out.....strange that 😉😉

seems a funny thing for a car to experience but i also did. on passenger side of mk3 estate.  same place .the locking mechanism.  i wrapped a bit of kitchen roll round the bar and then pushed it hard into locking position.  no problem since

Just wrap it with some duct tape it makes it tighter and more functional. 

It's sorted. I cut a short piece of bike inner tube and wrapped it around the bar, stapled and sprayed with silicone spray to stop any squeaking. Job done and thanks for all your replies 👍

Never thought of inner tube!! Mind you I'd have top take one out of kids bikes! Lol glad its sorted