The current BMW X3 covers up to 90 km on a full charge. Figures below are the longest-range variant in each generation.
| Years | Powertrain | Range |
|---|---|---|
| 2004–2006 | Combustion | 931 |
| 2006–2010 | Combustion | 1,081 |
| 2010–2014 | Combustion | 1,314 |
| 2014–2017 | Combustion | 1,340 |
| 2017–2024 | Electric | 58 |
| 2024–present | Electric | 90 |
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.