I have a 4th year warranty with no mileage limitation, paid for by my VW dealer (eventually) after lots of problems when my car was new in June 2005. It cost £235 (presumably the dealer price) and is provided by TWG Services. I have no idea if it will be any good as my car isn't 3 years old until June, but I will be straight back to the dealer if required!
The exclusions on the policy are all the normal wear and tear ones.
