The current Lexus RX covers up to 69 km on a full charge. Figures below are the longest-range variant in each generation.
| Years | Powertrain | Range |
|---|---|---|
| 2000–2003 | Combustion | 562 |
| 2003–2009 | Combustion | 802 |
| 2009–2015 | Combustion | 1,066 |
| 2015–2023 | Combustion | 1,121 |
| 2023–present | Electric | 69 |
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.