Now I know were the uncomfortable bench rear seats come from. MB B class EV

These are from Mercedes-Benz B-Class Electric Drive, even the E class has almost the same design.
I also found the BMW 3GT has the uncomfortable bench seats.
I wish they used other car make seats like my BMW F10 seats which is 100% more comfortable

Tesla MS Rear seats


Mercedes-Benz B Class EV Rear seats


Mercedes-Benz E-CLASS Rear seats


BMW 3GT Rear seats


Better rear seats of BMW F10

the similarities is that they are all flat on the back like a wall bench which is very uncomfortable.
Why cant they make the 2 side seat more shape to our body's so we don't slide around.
All they need to do is do a dip of about 1 inch so its not so flat.
When I get the car I will redo the rear seats with new sponge. like the F10