The back seats are little more than package shelves--or perhaps technicalities for slightly better insurance rates--but the front seats are very comfortable. Leg and head room are both adequate even for adults over 6'6". The cabin even manages to feel wide, thanks to the broad dash and open instrument panel design. In Roadster models, the soft top keeps nearly the same ample headroom as the Coupe, though it does sacrifice the arched, sleek roofline.
The console and glove box are small, and storage space in general is less than abundant. In the Coupe, a stowage space beneath the hatch is fairly generous, however, with room for a weekend's luggage for two, and folding the rear seats forward opens up even more space. In the Roadster, the folding soft top doesn't impinge on the trunk space, so it too offers adequate, if not ample, cargo space.
Despite its rabid performance and racy looks, the TT RS is essentially the same as the more pedestrian TTs in terms of space and comfort, though the stiffer suspension and larger tires mean a rougher ride and more cabin noise. The TT RS is only available as a coupe.
Whichever TT you choose, the available magnetic ride suspension improves ride comfort and noise as well as handling, and is well worth the money in our eyes.
Material quality, construction, and trim appearance are typically Audi--meaning very good all around. The overall effect is one of luxurious appearance and sumptuous feel.