I'm on my second SQ5,
I changed to the first SQ5 about a year ago, as had trouble moving the old people in an S5 coupe.
Great car, but missed the sounds and things like remote tail gate release, so have just changed to a younger version
Look a the spec of the cars, seems that there can vary quite a bit from car to car,
there are 3 basic versions, 230KW, 240KW and the 250KW plus
If sounds are important, if possble go the the B&O option, the very basic version dosent have a sub I just spent around 5k to improve the sounds on a 2016 plus
Looks like the price on the 21's has gone up as well, could now be as much as $1200 a tyre (as per Hyper Drive)