In reply to jim jones:
> I’ve an A3 hatchback (three door sport). My mat doesn’t go into the back, have to drop one of the rear seats and put it in that way. It fitted in the Golf I owned previously.
Yeah I was going to say... A3 boot isn't that big and definitely smaller than a golf. Obviously it depends on the mat, I've got an Ocun Dominator that fits snugly in a boot of a Ford Focus with lots of room on top below a parcelshelf and lives there a lot of the time but did not fit into an older Ford Fiesta which I'd expect to be similar size boot as an A3. A DMM highball on the other hand did fit the Fiesta.
To the OP: Look up the dimensions of your audi and a bunch of mats online? Or wait for a few more a3 owners to come along but they all drive Skodas on here .