The current Mazda 3 is 4,460 mm long, 1,795 mm wide and 1,440 mm tall, on a 2,725 mm wheelbase. It has grown 3 cm longer since the 2003 3.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 2003–2006 | 4,426 | 1,755 | 1,465 | 2,640 | 346 | 10.3 |
| 2006–2009 | 4,419 | 1,756 | 1,465 | 2,640 | 343 | 10.9 |
| 2009–2013 | 4,462 | 1,755 | 1,470 | 2,640 | 340 | 10.4 |
| 2013–2019 | 4,460 | 1,795 | — | 2,700 | 364 | 10.6 |
| 2019–presentCurrent | 4,460 | 1,795 | 1,440 | 2,725 | 329 | 11.4 |
The Mazda 3 offers 830 mm of rear legroom and 890 mm of rear headroom, with 1,135 mm of legroom and 980 mm of headroom up front. Rear shoulder room measures 1,460 mm across.
| Front | Rear | |
|---|---|---|
| Legroom | 1,135 mm | 830 mm |
| Headroom | 980 mm | 890 mm |
| Shoulder room | 1,480 mm | 1,460 mm |
Interior figures are the roomiest measurement (seat fully back), taken as the median across the current generation’s variants; individual trims vary.
Exterior figures are manufacturer specifications for the 3, 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.