I'm thinking about purchasing my A4 when the lease is up in a couple of months. Are their any additional charges other than the residual + tax? Can/Should I do this directly with Audi?

Any tips appreciated.

 

Havent purchased any cars after a lease but given back quite a few.

You can purchase it for whatever the residual is on the lease + whatever your tax considerations are.

Its with whomever you leased it. If it was Audi finance then yes, otherwise its whatever bank the lease was done through.

You can call up your leasing company to verify any lease end information if there is less than 6 months left.