[cherry_tree]

Volvo xc60 has an estimated 25 mpg overall (https://www.volvocarsrichmond.com/volvo-xc60-mpg.htm)

It has an 18.8 gallon fuel capacity (https://www.volvocars.com/lb/support/car/xc60/article/dfc6f0...)

That’s a max range of 470 miles. You would need much greater fuel efficiency above 34 mpg to get to 650 miles on an 18.8 gallon tank.

[gambiting]

Cool, I guess when I did 700 miles on a single tank of fuel driving Switzerland to Italy and then again driving Italy to Austria and then again Austria to Netherlands this summer I just imagined it. My total for the 3000 miles was 38mpg(imperial).

Also you are quoting a value for the B5, which is not what I have, mine is a T8(and before you ask - no, I didn't have any opportunity to charge it anywhere on the way).