The best thing about HP (if thats what you're loking at) is that after half the term you can give it back. So get the best out of it then walk away. Obviously keep your deposit as low as possible.
You would have to put a reasonable deposit for you car to be worth more than what's outstanding after two and half years of a 5 year HP. Or buying something like a gti/scirocco/tiguan that have strong residual values.