I’m looking at buying a Audi A4 from a local dealer, its a 2000 model and has 116,500 on the clock. The airbags need replacing as the car is now 14 years since manufacture, is this something that is compulsory?

Also, what are the likely servicing and maintenance costs should I expect from a car like this? There is a complete service record, should I follow up what parts have been changed? It’s valued at £1795 but I think I can haggle it down a bit!