Petrol will be bad mpg unless it's a hybrid, I can't say exactly how good or bad but someone I know bought an S90 2.0 petrol and rejected it over how bad the mpg was. However you won't have a diesel choice in that year onwards iirc.
Spec, I would say any but sit in all of them first, a momentum spec or whatever it might be called now might not suit due to the seats, an R-Design could give you another seat problem if your a bit em wide. I based this thinking the seats extended on the R and Inscription specs but I'm not sure if they do now.
Hands of the Gods, a second hand one will have it if the original owner spec'd it otherwise it can be retro turned on for you at cost £200 iirc.
Yes but it's called My Volvo and yes it is worth having for the journey diary alone, it will also start and warm the car for up to 20 mins iirc on a cold day and lock & unlock the car although you have to press the boot lock before the car actually physically unlocks, it is subs but it will be valid up to the cars 4th birthday anyway.
It's a car and it's pot luck.
Not sure and the roof will be listed as the Xenium pack.
Factory Nav or the media you are playing at the time from media stick or the radio.
https://www.volvocars.com/uk/support...s/xc40/2018w17
Adjust the year & engine/spec to suit.
Sorry you said brochure didn't you.
https://www.volvoclub.org.uk/press/v...9_brochure.pdf Start at page 50.