The current Mercedes-Benz B-Class is 4,419 mm long, 1,796 mm wide and 1,562 mm tall, on a 2,729 mm wheelbase. It has grown 15 cm longer since the 2005 B-Class.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 2005–2011 | 4,270 | 1,777 | 1,604 | 2,778 | 458 | 12.0 |
| 2011–2018 | 4,359 | 1,786 | 1,557 | 2,699 | 486 | 11.0 |
| 2014–2018 | 4,392 | 1,787 | 1,558 | 2,699 | 488 | 11.0 |
| 2018–presentCurrent | 4,419 | 1,796 | 1,562 | 2,729 | 446 | 11.0 |
The Mercedes-Benz B-Class offers 870 mm of rear legroom and 960 mm of rear headroom, with 1,130 mm of legroom and 990 mm of headroom up front. Rear shoulder room measures 1,490 mm across.
| Front | Rear | |
|---|---|---|
| Legroom | 1,130 mm | 870 mm |
| Headroom | 990 mm | 960 mm |
| Shoulder room | 1,550 mm | 1,490 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 B-Class, 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.