Hi all thinking of buying a passat 57 reg 2 tdi s or se auto ie dsg box.

First of all what to pay?
Cost to service please rough idea.
i think timing belt and changes every 80 k is this correct is this front bumber off like my old audi A6?

What goes wrong heard about flywheel problems and also flat batts and build quality not as good as v.w should be.

Thanks for your help