Regarding Polestar for XC40, Polestar & Volvo say:
"The best way to understand the benefits and how they change the car is a test drive. Please contact your dealer to arrange this. However, to summarise, here is what a Polestar Optimisation delivers:
A more powerful and agile car
A dynamic and emotionally satisfying driving experience
Faster engine response and quicker acceleration
Sportier gear shifts
Better control during cornering due to the intelligent shift schedule
Better balance in corners and traction at take-off (AWD)"
I am having trouble coming to acceptance with the fact that I must forever manually engage this awesome but super pricey ($1,300??) option. If it's that special (& pricey), it rates a default status, IMO.