The current Alfa Romeo 164 is 4,575 mm long, 1,760 mm wide and 1,390 mm tall, on a 2,660 mm wheelbase. It has grown 2 cm longer since the 1988 164.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 1988–1993 | 4,555 | 1,760 | 1,400 | 2,660 | 504 | 10.8 |
| 1993–1998Current | 4,575 | 1,760 | 1,390 | 2,660 | 504 | 10.8 |
Exterior figures are manufacturer specifications for the 164, 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.