Newbie Buyer needing advise

[Danz]

Hi... im new to audi ownership and I am looking at purchasing a 2002-2004 A4 1.9tdi avant...this will obviously be second hand, with about 100k + on the clock...jus asking whether there is anything to look out for...parts prices, servicing costs etc...and whether a car with this amount of mileage is one to avoid? just dont want to be hit with massive bills...as going from a renault, im guessing parts are a little more expensive if things do go wrong

Hope to hear some advise

Thanks