Welcome to the forum, can you please add your location to your profile so we know where you are based.
I rarely have my car in sport+ as I find comfort plenty fast enough, will give it a try later and report what I find.
As Andrew says I would guess sport+ isn't suitable around town and in my opinion not needed, I also love my 43.
2017 GLC AMG43 premium plus, night pack, leather, intel lights, 360 camera, side steps. = sadly gone
Now GLE450 Premium plus, Selenite, Black/White Nappa leather, Tech plus pack, Driving assistance pack, Tow pack, Off road pack, 22 inch wheels.