I would guess the bushes are gone as mine where stuffed after 42k on the clock.
Follow the wishbone back from the wheel and you will find the bush, best to replpace them with Cupra bushes as they are solid and will last much longer.
It can be hard to diagnose CV joints without have the car up on a ramp, sometimes they can be obviously stuffed and can be seen if the rubber boots are burst - thus letting dirt in, damaging the joint.
Had a similar issue with my rear seats in that I took the seat back out altogether but couldn't get it back in for over an hour!
.G.