Forgot to say, No real issue with depreciation compared to any other similar car. In reality, I have had zero depreciation as the cost savings made on fuel and servicing are greater than the residual sale price of the car. Having said that, cars that do not have the free supercharging will find that that cost benefit is much narrower. At the price Tesla charge for electricity the average mpg comparison would be circa 50-75mpg (75mpg because some people to get close to 300 miles range, I always do my calculations on 200mile range).