The difference in electric vehicle battery sizes
Based on our selection of 40 of the best selling electric vehicles available right now, 54kWh is the closest representation of the current average battery size. However, it is worth noting another top 40 list of vehicles might generate a slightly different result.
Information available online generally focuses on a 60kWh battery. So when typing “how much does it cost to charge an electric car” into Google, the results will be subjective to that particular size of battery.
Battery sizes actually range from the popular Tesla Model 3 which sits at the higher end of the battery scale, boasting a 75kWh battery option right down to the Smart EQ Fortwo city car which has a smaller 17.5kWh.
Therefore the cost of charging your Tesla, compared to Smart EQ would be vastly different.