The current Mercedes-Benz B-Class can tow up to 1,800 kg braked. Figures below are the strongest variant in each generation — lighter trims and engines tow less.
Unbraked (no trailer brakes): 750 kg.
| Years | Braked | Unbraked |
|---|---|---|
| 2005–2008 | 1,500 | 400 |
| 2008–2011 | 1,500 | 715 |
| 2011–2018 | 1,500 | 750 |
| 2015–2018 | 1,200 | 695 |
| 2018–present | 1,800 | 750 |
Towing capacity is the manufacturer-rated maximum for the model's strongest variant in each generation, not an average across trims — a base engine will tow less than the figure shown. Cars with an implausible source-data towing figure relative to their own kerb weight are excluded rather than shown with a guessed correction.