If Polestar+ is not a feature you don't value or don't want you simply opt to ignore it. For others it's an upgrade option to be considered.
If the XC70 roof spoiler is not a feature you don't value you opt to ignore it.
If leather seating is not a feature you don't value you opt to ignore it.
Volvo provides options for its customers just like any other company.
Not everyone wants the extra 25 HP that Polestar+ provides, and Volvo recognized that, so it makes it an option rather than making it a standard. Same is true for the various "Packages" Volvo offers.
In fact, just about all `goodies' for the XC70 can be individually ordered rather than taking what the dealership may have ordered for their lots. There's a price list for all the `goodies' available on the Volvo web site and it can be downloaded as a PDF file. The only real downside to `custom ordering' is the waiting time for the built-to-order XC70 to arrive for pickup from dealership. It's roughly the same wait time as for Volvo OSD ordering program.
I personally believe Polestar/Volvo claims about the fuel use being no different from stock. I've had ECU upgrades done on two S60Rs (MTE ones from IPD) and I can say there was no noticeable difference in the fuel consumption after having made these upgrades. This is very difficult to substantiate as one's driving behavior is not constant, but from my fuel expenses before and after the ECU upgrades lead me to conclude what I've posted above. I really enjoyed the extra performance these ECU upgrades made to my S60Rs both for normal driving and for the days I took them to the local speedway to engage in driver education that allowed one to really appreciate what their cars are capable of -- hard braking, cornering, maneuvering, obstacle avoidance... realizing one can actually steer the car around an obstacle at 70 mph with brakes fully engaged and not skidding out of control always amazes me -- and it requires the space at a speedway to experience this... Sorry, I'm way OT with this.
Regards -- Barry Sharp
Current: MY2012 XC70 T6/Twi Bronze/Espresso Brown/Polestar/Platinum/BLIS/Tech/ABL/Scuff Plates/Front&Rear cameras
Traded 2011 C30 R-Design
Son's '01 S60 2.3L T5,Maya Gold,96Kmi
Son's '03 XC70 Platinum Green (OSD)
Daughter#1 2011 XC60
Daughter#2 2010 XC90
SOLD '86 745 GLE 6-Cyl-Turbo Diesel,Graphite,255Kmi
SOLD '03 XC70 to my son
SOLD '03 XC70, '04 S60R, '07 S60R