I run have a 2005 Citroen C4 1.6 diesel, with currently 84,000 miles on the clock. It's covering approximately 500 miles a week and has so far proven reliable (and very cheap to run). It'll probably be used for this sort of travelling for another year before replacement.

In order to ensure that it remains economical, do think that it'd be worth buying a warranty for it, or instead take the chance that nothing expensive goes wrong as the miles pile on and the car gets older? I've read on your site that it's not worth it on older cars, though this one is a 'young' six years old!