What's my car worth?

I own a Vauxhall Tigra 1.8 Exclusiv (registered in Jan 2007) with 6500 miles on the clock. Id like to exchange it for one-year-old 1.8 Mazda MX-5. Roughly, how much would I have to spend?
Jean Hall

This depends on how you go about selling your current car and buying the new one.

Trade your Tigra in at a Mazda dealer, and we reckon you should get 8855 towards your new car. An average mileage MX-5 should cost between 11,315 and 13,625, depending on whether you want a folding hard roof or a soft-top.

So, budget on splashing out between 2500 and 4750 for the change.

If you want to spend a bit less, buy the MX-5 privately for between 10,605 and 12,770, then, sell your Tigra in the classifieds for around 9165.

Its a bit more hassle, but for a saving of around 1100 you might think its worth it.