> (...) for cars that use a mechanical, cable-operated internal release for the fuel filler, it’s much easier to have the release be on the same side as the fue

> (...) for cars that use a mechanical, cable-operated internal release for the fuel filler, it’s much easier to have the release be on the same side as the fuel filler flap (...) The position of the mechanism that you use to unlock it can also give you a clue, on those vehicles where there isn't any arrow.