[bagekko]

Few weeks ago I was curious what the real cost of running our i3 and was surprised by the results. Then this week I realized the MPGe rating is nonsense and nothing close to real world MPG. So I ran some numbers and EV's dont provide as much savings as I thought and those Tesla calcs are total bullsh!t.

The problem is any EV savings calcs just use the cost of the kw not all the other related costs on your energy bill. On mine the kw costs about 12-13 cents but after supply charges and taxes the total cost per kw is actually 25 cents.

I dont know if the whole battery on the Tesla is usable, so I used the total battery on the i3 in the calc versus the actual usable 30kw, if you change it to 30kw it comes out to the same 40mpg as the Model 3. Now if you change the total electricity cost to $0.35 as is found in many major high cost cities, the i3 or Model 3 will not really save you any money over 27 mpg gas equivalent!

------------------------------------BMW i3 Rex------Tesla Model 3 LR------BMW 330i
Battery - kw------------------33---------------------75
Electricity Total Cost----$0.25--------------$0.25
Battery Charge Cost----$8.25--------------$18.75
Range--------------------------120------------------300
Cost Per Mile--------------$0.069-------------$0.063-------------------------$0.093
Gas Price Gallon-------- $2.50----------------$2.50------------------------- $2.50
Battery - Gas Gallons---3.3------------------7.5
MPG----------------------------36-------------------40--------------------------------27
Cost 12000 Miles--------$825--------------- $750---------------------------$1,111