Is an electric car still cheaper to drive with gasoline at $2/gallon? First, it's important to compare apples-to-apples. A fair comparison to my 2013 Tesla Model S Performance would be an Audi S8 in terms of price, performance and vehicle weight. Audi lists an EPA average of 20mpg for the 2015 S8. Here's how they compare... At $2.50/gallon (rock bottom price for premium gasoline required for the Audi S8), it would cost $125 to go 1,000 miles in the Audi. I've driven my Tesla 30,000 miles, through two Vermont winters, and I used an average of 365 watt/hours of energy per mile. So for each 1,000 miles, I consumed 365kWh of energy. At the U.S. average electric rate of $0.12 per kWh, it cost $43.80 to go 1,000 miles in the Tesla. When gasoline prices come back to their previous levels, and they will, the Tesla will be five times less expensive to fuel than the Audi.