Speedometer speed versus real speed difference

[Yves]

Question, there seems to be a considerable difference in indicated speed versus real speed. Not so much at lower speeds. But at higher speed like 130 km/h the real speed is 125km/h …
In my BMW iX the difference is always 1 km/h, I use the indicated speed of Waze … I’m wondering if anybody else is seeing this.

 

[Pitteken]

yes I can aknowledge. Same in my 4. Compared to my previous car It is a bigger difference

 

[Jetced]

Also had that feeling. 147km/h was 140 GPS speed