The VXR8's price looks inviting to begin with - £35,000 isn't much for a V8 monster. Resale values aren't horrific, either - after three years, it'll be worth around 40% of what you paid for it. Don't sign that cheque until you've considered the running costs, though. You'll pay a group 20 insurance premium and the car has an official average of just 18.5mpg. Worse still, if you're not careful with your driving, you won’t get anywhere near that, and you could spend a fortune on tyres, too.