The current Mercedes-Benz CLS is 4,988 mm long, 1,890 mm wide and 1,435 mm tall, on a 2,939 mm wheelbase. It has grown 8 cm longer since the 2004 CLS.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 2004–2008 | 4,912 | 1,862 | 1,396 | 2,854 | 500 | 11.4 |
| 2008–2010 | 4,917 | 1,873 | 1,430 | 2,854 | 502 | 11.2 |
| 2010–2018 | 4,940 | 1,881 | 1,416 | 2,874 | 520 | 11.3 |
| 2018–presentCurrent | 4,988 | 1,890 | 1,435 | 2,939 | 526 | 11.9 |
Exterior figures are manufacturer specifications for the CLS, 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.