Submitted by RussellV on September 28, 2013
Eleven days ago I put a kilo-watt hour meter in line of the 50 amp charging outlet I use to charge my car which I have owned four months. I purchased the standard electric meter on-line from Hialeah meters in Miami. The meter and mount cost only $30.00 and was very simple to install. I have driven my car about 30 miles a day over the past ten days and charge it every night. I have found I get about 0.47 kwh/mile. That is equivalent to about 75 MPG which is much less than the 94 MPG EPA estimate. I believe most of the difference is due to the Vampire Loss while the car is idle. Does anyone know when Tesla is going to fix this? Until they do I don't believe the cars should be advertised as 94 MPG equivalent. Don't get me wrong I am happy with the car but I also believe in truth in advertising.
Has anyone else metered their charging outlet?
Thanks for any feedback.