New mercedes EQS has quite big flaps I estimate 60mm in heigth in front covering the wheel width. Flaps will get smaller when you come towards the center of the car so they still cover the suspension arms nicely. Difficult to find good pictures but in this video they are most clearly visible that I have been able to find. Cd of EQS is 0,20.
In the rear is seems flaps size is about 30mm so much smaller there.
https://youtu.be/j-7yHruH0PM?t=28
https://media.daimler.com/marsMediaS...9NDA2MzA!&rs=9