Submitted by AndrewB on Sun, 2013-04-07 16:43
We all know the Model S has issues with battery drain while not in use, thus I decided to test how much for both my Model S (Sig #26) and my Roadster (#404). I did this test while on vacation (8 days and 2.5hrs) with both cars in the garage unplugged, garage temp about 60 degrees, here are the results:
All in miles and "rated range"
Start Range Ending Range Total Usage Avg Per Day
Model S 227 83 144 17.8
Roadster 167 159 8 .987
The Model S is a great car but this has to be fixed, its pretty stunning that the Model S would consume ~18 miles of rated range per day while idle!! This is why you would not take it to the airport for any trip more than a few days unless there was a charge station. Also for completeness (state of battery) the Model S has 7,800 miles on it since September 2012 and the Roadster has 26,300 miles since April 2009.