The current Audi A5 is 4,829 mm long, 1,860 mm wide and 1,436 mm tall, on a 2,897 mm wheelbase. It has grown 12 cm longer since the 2009 A5.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 2009–2017 | 4,711 | 1,854 | 1,391 | 2,810 | 480 | 11.4 |
| 2017–2020 | 4,733 | 1,843 | 1,386 | 2,824 | 479 | 11.7 |
| 2019–2019 | 4,783 | 1,866 | 1,399 | 2,826 | 465 | 11.7 |
| 2020–2024 | 4,758 | 1,844 | 1,399 | 2,824 | 459 | 11.7 |
| 2024–presentCurrent | 4,829 | 1,860 | 1,436 | 2,897 | 410 | 12.1 |
| 2026–present | 4,896 | 1,952 | 1,428 | 2,906 | 331 | 12.9 |
Exterior figures are manufacturer specifications for the A5, 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.