Nothing technical but for me the cabin turbulence is awful, even with the wind deflector. You end up with frostbite on your right ear (in my case) Have tried all sorts of combinations, windows up, down, half open and one open. And what have they done with the storage, the net is so small it's useless and finally you need child like hands to use the door pockets which hold almost nothing. You did ask lolWhat are the bad points on the Z4 and can you live with them
Now can I live with them, not sure need to have blast in the Z3, perhaps it's just as bad and I've forgotten. Been sometime since we used the Z3