cheers guys there is only 80,000 genuine miles on the car so it should not fail .
ill try vw and see what happens
Don't let them fob you off either

Just be firm and polite

If need be get Trading Standards involved. They should be able to put you in touch with a specialist who will write you a report on the cause of the engine failure giving you hard facts as to why and how it failed and if they believe its down to a defect etc etc
For reference my work has just had a complete replacement engine for one of our Nissan Primastar vans. Although out of warranty due to being over mileage we got a complete engine but had to pay around 50% of the labour costs to fit it. All we had in terms of history was the fact we bought genuine parts as we serviced them ourselves. We service diesel engines day in day out albeit a bit bigger

Good luck
