Have now been to Suoerchargers on 2 separate occasions. Maximum 48KW is unacceptable!!! | 2019年11月24日

It depends on your state of charge (SOC). You might only get 25 kW if at 90% SOC. Cold temps also reduce charging speed until the battery heats up.

It might be worth reading this article: which explains how it works.

Also the battery size matters. If you have an older X60/75, they will never get more than 105 kW.