The current Mercedes-Benz B-Class covers up to 75 km on a full charge. Figures below are the longest-range variant in each generation.
| Years | Powertrain | Range |
|---|---|---|
| 2005–2008 | Combustion | 964 |
| 2008–2011 | Combustion | 1,102 |
| 2011–2014 | Combustion | 1,316 |
| 2014–2018 | Combustion | 1,250 |
| 2015–2018 | Electric | 200 |
| 2018–2022 | Electric | 70 |
| 2022–present | Electric | 75 |
Range is the manufacturer-rated maximum for the longest-range variant in each generation. Electric generations use the rated battery range; combustion generations are calculated from tank capacity and combined-cycle consumption. Figures outside a plausible range are excluded rather than shown with a guessed correction.