The current Audi TT is 4,193 mm long, 1,832 mm wide and 1,373 mm tall, on a 2,505 mm wheelbase. It has grown 15 cm longer since the 1998 TT.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 1998–2006 | 4,041 | 1,764 | 1,346 | 2,425 | 246 | 10.5 |
| 2006–2010 | 4,183 | 1,842 | 1,350 | 2,468 | 290 | 11.0 |
| 2010–2014 | 4,190 | 1,842 | 1,349 | 2,468 | 292 | 11.0 |
| 2014–2019 | 4,179 | 1,832 | 1,351 | 2,505 | 305 | 11.0 |
| 2019–2023Current | 4,193 | 1,832 | 1,373 | 2,505 | 305 | 11.0 |
Exterior figures are manufacturer specifications for the TT, averaged per generation across its variants and shown for the most common body style. Generations with the same size are merged. Boot capacity is the seats-up figure where the manufacturer quotes one.