The current Suzuki Alto is 3,500 mm long, 1,600 mm wide and 1,470 mm tall, on a 2,360 mm wheelbase. It has grown 21 cm longer since the 1981 Alto.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 1981–1986 | 3,295 | 1,415 | 1,335 | 2,150 | — | 8.8 |
| 1986–1996 | 3,300 | 1,415 | 1,410 | 2,175 | 180 | 8.8 |
| 1994–2002 | 3,495 | 1,495 | 1,405 | 2,335 | 210 | 8.6 |
| 2002–2006 | 3,495 | 1,475 | 1,455 | 2,360 | 177 | 9.2 |
| 2009–2015Current | 3,500 | 1,600 | 1,470 | 2,360 | 129 | 9.0 |
Exterior figures are manufacturer specifications for the Alto, 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.