The current Mazda Demio is 3,815 mm long, 1,667 mm wide and 1,535 mm tall, on a 2,390 mm wheelbase. It has grown 1 cm longer since the 1998 Demio.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 1998–2000 | 3,808 | 1,650 | 1,535 | 2,390 | 330 | 9.4 |
| 2000–2003Current | 3,815 | 1,667 | 1,535 | 2,390 | 330 | 9.2 |
Exterior figures are manufacturer specifications for the Demio, 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.