This is the case where we're most likely to say an EV might not save you money. The big EV savings come from cheap home charging; lean entirely on public rapids and your per-mile energy cost can approach petrol, before the convenience trade-offs.
That doesn't automatically mean "don't" — you might value the drive, the quiet, or local air quality. But you should go in with honest numbers, not a brochure figure.
Set no home charging on any car page to see the real monthly cost against petrol, verdict included. If the sums don't work, the site will say so — that's the whole point of it. Method and sources: methodology.