Hi guys when i bought my street ka the car company put there sticker onto the back window i have got the sticker off and the sticky bit but it has left the outline of the sticker and it looks like it has steamed up but hasn't.Is there anything that i can buy to get rid of this as i don't want to cover this with another sticker.please help.

Thanks

try meths on a cloth or some brake disk cleaner on a cloth to remove the residue.
you may find that wd40 will remove it or some lemon juice from a lemon not
the squash drink.

you may find that hairspray can remove it as that will remove marker pen ink aswell