Humm....from what I've read on here its not really necessary in the first year at least, because everything is within walking distance because youre living on campus / or public transport suffices, when necessary. But I'm thinking of possibly getting one for the second year because like you said, we might be located slightly further away from campus / town etc. But I dunno, I'm sure someone already there will give more useful information.
Oh and also, parking on campus is apparently quite limited, so you wouldnt be able to bring a car anyway