Update to this: took it in to get them wires checked, apparently only the insulation was melted and not any of the wires.
They are pretty certain to be using that much fuel it can’t be running through the engine as if it was that rich it’d be black around the exhaust which it isn’t and runs great according to them.
They think it could be a fuel leak and going to look for it when it’s not such a bad weather.
The car was sitting for a while and the fuel gauge has been a bit weird with its readings. Anyone know if it’s common for the fuel lines to leak?