WLTP The test is conducted in a laboratory at an ambient temperature of 23°C, which is considered optimal for electric vehicles, really, in UK that isn't really acceptable.
The WLTP cycle consists of four phases—Low, Medium, High, and Extra High—representing different driving speeds and conditions. These phases include starts, accelerations, stops, and varying speeds to mimic urban, suburban, and highway driving. No headwinds, side winds, hills, passengers, Etc. Etc.
The energy consumption is measured by dividing the usable battery energy by the energy consumption per kilometer. For example, if a car has a usable battery capacity of 77 kWh and consumes 140 Wh/km, the WLTP range would be calculated as 550 km.
While WLTP still doesn't account for variables like weather, driving style, or terrain, which can significantly impact real-world range