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.