You can leave the handle up on the
Graco SafeSeat, so that should free up a bit of space.
I haven't been in a a4, so I don't know the space you are working in. Have you tried installing it yourself? You'll need to use the seatbelt, not
LATCH. I don't believe that Audi allows the use of center
LATCH.
After installing, take a pic and post it. It helps me to see what is going on and if there is truely a problem.
Susan