Originally Posted by Diver
The 104 mpg is BS. It is based on CO2 output with the assumption none or very little of the electricity is generated from burning coal. It's just a government trick to push electric cars.
No it isn't. It's based on projected electrical energy cost at an average rate.
As to whether it is "BS", it's a valid observation, but it is no more BS than standard EPA MPG ratings. There's a reason the dealer says "your mileage may vary".
2012 135i convertible, DCT, Black/Beige, HK, Prem, M sport, no nav.