Determining electric vehicle charging speed is a complex equation based on the power of the fast or Level 2 charger and the level of charge the vehicle can handle (known as the acceptance rate), among other factors. Consumer Reports broke down new EVs’ charging speeds by miles of range added per minute or per hour at fast and Level 2 chargers. Here are some of the fastest- and slowest-charging EVs, according to the analysis, which relied on EPA data provided by the manufacturers. The vehicles achieved these added ranges when charged under ideal conditions. Ten miles equals 16 kilometers.