6x more efficient (at the car) is pretty accurate. Tesla's run around with a battery that has the energy content of about 2-3 gallons of gas.
Yes, there are losses to bring the electricity to the car... there are also transport costs to get gas to a fuel station.
Not sure where the FUD angle is in all this. I would think everyone could agree that electric cars are a lot more efficient, and that the "clean-ness" of electricity varies wildly depending on where and how you get it, but can be very clean if coming from wind/solar which are very much on the rise.
Transportation losses are already factored into the price of gasoline (at the pump) and electricity (at the meter).
If you super charge, do pay what Tesla delivers to your car or what the car pulls out of the battery?
Measure energy at the consumer point of sale.
OP wants to defend EV arguments.
If you defend with bogus numbers, when friends of ICE owners with EV's say they only save 1/2 or 1/3 his whole argument goes out the window.
In practice, my Model S is getting about 60 mpg equivalent (which is VERY good for its size and performance). OP is claiming 180 mpg.
Here is really simple math.
I get about 250 wh/mi on my Model S. 1 kWh is $0.32 (delivered in New England)
0.250 kWh/mi * $0.32 / kWh = $0.08 / mile
Now take a 30 mpg vehicle at $6.00 / gallon that's not hard to obtain today.
$6/30 = $0.20 / mile
Where is the 6x ? It's not even close to that. And I didn't even factor in the REAL cost of electricity.
I'm really consuming probably around 350 wh/mi on my Model S. That includes charging losses and all HVAC when not moving, battery heating etc.
0.350 kWh/mi * $0.32 / kWh = $0.11 / mile
And that's with it at $6 / gallon, what was it when the price of gas was $3 / gallon?
People don't care about the theory. They care about their wallet.
It will vary a lot by location, but I doubt it's close to 6x any where.