Hi Gary have you felt the clutch change whilst in your ownership? I got heavier or slipping etc?
Also what's the mileage on your a3?
I can't comment on the bite point on the 1.5 as I've not driven it, sorry. Have you taken it to Audi at all? As the car is under warranty but obviously the clutch is only covered in rare circumstances.
Sorry I can't help more.
Cheers
Steve