The current Mercedes-Benz SLK is 4,134 mm long, 1,810 mm wide and 1,301 mm tall, on a 2,430 mm wheelbase. It has grown 14 cm longer since the 1996 SLK.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 1996–2000 | 3,995 | 1,715 | 1,287 | 2,400 | 145 | 10.5 |
| 2000–2004 | 4,010 | 1,715 | 1,270 | 2,400 | 145 | 10.6 |
| 2004–2008 | 4,089 | 1,786 | 1,294 | 2,430 | 208 | 10.5 |
| 2008–2011 | 4,103 | 1,786 | 1,294 | 2,430 | 208 | 10.5 |
| 2011–2016Current | 4,134 | 1,810 | 1,301 | 2,430 | 225 | 10.5 |
Exterior figures are manufacturer specifications for the SLK, 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.