BMW 6 series coupe F13, BMW X3 G01
You are right about not lowering/rise manually. But they included air suspension in the rear, see here on the 6th bullet “Lift-related dampers and rear-axle air suspension come as standard.”i dont believe they do - asked my dealler and it is only a stiffness option not the lower/rise one
The BMW i4 and BMW iX together mark the next major step in the BMW Group transformation towards a 50% global share of fully-electric vehicle sales in 2030. Therefore it is only logical that both vehicles are launching at the same time. See here all details on the first-ever BMW i4. For the BMW...
this is probably the same tech as the 5 series f11 touring introduced back in 2011, to be able to be always leveled in heavy load. Which is something the i4 is always due to the batteries weight.
the stiffness option your dealer mentioned should be related to the adaptive dampers. I have it also on my 6 series, you can select sport, comfort, comfort+, although no air suspension in mine