0.23 and 0.22 is pretty low. It's the lowest that I know of.Mercedes says has the lowest drag coefficient of any production car. Here's a good pic of the CLA in the wind tunnel.
True, you can see in the picture how vertical it is. Almost straight up!It is pretty incredible considering the front grill is large and almost vertical. But I can see the other lines in the car and they're all very very streamlined. They make up for the large grill.