First, the biggest savings: no more expensive gas. With 100 miles using 34kWh (about 100 MPG) and electricity costing an average of $0.12/kWh, the yearly cost to drive a Tesla Model S 85D 15,000 miles is $612. Compare that to Toyota (TM) Camry's 30 MPG and an average cost of gas of $2.40 per gallon.