Bike rack options on a A1

You have 2 options really, one fairly affordable and the other not so much lol. The first is a set of roof bars with 2 cycle holders mounted on top which will set you back around £380 odd or the alternative is a tow bar with a cycle mount attachment which will cost the best part of £1500 fitted at a main dealer. Hope this helps :)
 
Yes you can mount it on both the 3dr and sportback. If you are referring to the boot mounted one I've heard problems especially from s-line model owners that the straps catch on the boot spoiler