is audi a8 body parts capable with the a4?

um well that really depends on the years of the car. normaly the a6 is some what of a close match jsut wit ha different rear end. but im preaty sure the a8 parts are not compatable. i do know that vw fenders of the same year are half the time the same as well.

The short answer is no. The A4 doors are shorter and the alignment is not the same.

No. There is no instance in all years of swaping body parts between A4 and A8

Yes you can swap the body parts as long as you have enough duct tape.

I have and 2007 Audi A4 S line and I need to replace the rear door. Can I replace it with any A4 from 2005-2009