Mine doesn't and never has

I can let go of my steering wheel on a motorway and it will stay straight and true.
I've got a good one then yeah?
I also don't have any of these annoying interior rattles.
I only get the rattle from the window motors when the windows are down. But thats only from my speakers vibrating.
I also have no
problem with my rear washer pipe.
No random clunking when full lock and reversing.
No issues with the engine.
BTW this is an 06, 1.4 sport.
TBH it sounds like a power steering fault. Maybe the motor?
Seat should have sorted it.