In v8 SEAGULL there is changelog stated: faster scooter (maximum) acceleration instead of previous 70% linear
You can change it to default 70% (like on rental) by using 30 taps sequence, you should hear confirmation *sound* and acceleration will be now smoother – this can be useful during wet condition or negative temperatures due to traction control.

In PARROT and KINGFISHER, half of speed settings (depending of scooter) should provide you lower acceleration curve and disabled front wheel “slip control”, in full acceleration “slip control” is always on (ESC setting)