The current Peugeot 308 is 4,367 mm long, 1,859 mm wide and 1,441 mm tall, on a 2,675 mm wheelbase. It has grown 9 cm longer since the 2007 308.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 2007–2013 | 4,276 | 1,820 | 1,498 | 2,610 | 348 | 10.9 |
| 2013–2021 | 4,253 | 1,804 | 1,457 | 2,620 | 420 | 10.4 |
| 2021–presentCurrent | 4,367 | 1,859 | 1,441 | 2,675 | 388 | 10.5 |
Exterior figures are manufacturer specifications for the 308, 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.