The current Peugeot 605 is 4,765 mm long, 1,799 mm wide and 1,416 mm tall, on a 2,800 mm wheelbase. It has grown 4 cm longer since the 1990 605.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 1990–1994 | 4,721 | 1,799 | 1,416 | 2,800 | 497 | 11.0 |
| 1994–1999Current | 4,765 | 1,799 | 1,416 | 2,800 | 497 | 11.0 |
Exterior figures are manufacturer specifications for the 605, 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.