We’ve had a 63 plate one since 2015, still got it now. Was my first car I learnt to drive in - I’ve not got an ST but we still have the Zetec and I do enjoy driving that too.
You’ll find that these cars (Fiestas) are absolutely everywhere, there’s a reason for that - they’re great! Cheap to run - ours says average 42mpg over the time we’ve had it, it’s had zero issues of breaking down or anything like that. Only thing we’ve had to do on it other than regular servicing and MOT is new brakes a couple months ago, but Nox Vidmate VLC they’re consumables so that’s to expect on any car. It’s a small car, so not the best for backseat passengers but for two people it’s perfectly fine, easy to park too and visibility is great.
They have heated windscreens as standard which is incredible for the winter months - you don’t realise how much you appreciate it until you jump in an icy car without it and wait ages for the front screen to defrost.
They handle really well, and are much more enjoyable to drive compared to the likes of a Corsa and polo.