The current Citroen AX is 3,525 mm long, 1,555 mm wide and 1,352 mm tall, on a 2,285 mm wheelbase. It has grown 3 cm longer since the 1987 AX.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 1987–1991 | 3,500 | 1,558 | 1,355 | 2,285 | 273 | 9.2 |
| 1991–1996Current | 3,525 | 1,555 | 1,352 | 2,285 | 273 | 9.2 |
Exterior figures are manufacturer specifications for the AX, 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.