My comparable in luxury and performance cts-v only gets 175 to 200 miles per tank of nearly $4 a gallon premium fuel. Electricity costs $0.08 per kwh here. The model s (a car I am seriously considering would save me about $260 a month in gas. Add that to my $700 a month lease payment and it's roughly equivalent to the cost of a model s with the caveat that I'm on likely to leave town (which is fine we rarely drive my car out of town opting to take my wife's equally thirsty jeep).