[bagekko]

Is the usable battery of both really that low? I thought the i3 had 30 of 33kw usuable.

LOL your electricity is cheap and gas exp. I wish my total kw electricity cost was .13kw and not .25kw. But my gas is $2.60 for 93 and $2.20 for 87.

My whole point was that it is different for everyone the cost of an EV vs ICE. Many factors involved, but for some it could be more exp to run an EV than ICE.

I tend to question everything in life, analyze it, and do too much research. Surprised it took me so long to figure out my i3 cost, while its worth it because of my wifes long commute and overage miles on the X5, as a stand alone vehicle without the great deal I got, it would not be a good value.

Originally Posted by afadeev

Thanks for taking the time to run the comparison, but there are a couple of critical discrepancies in your table.

First of all, energy cost varies by location and by your chosen electricity plan (there is more than one to choose from!). There are variable and fixed rate plans, those with fixed usage cost per KWH, and those with variable cost on various thresholds of consumption.

To be specific, my cost per KWH is $0.006982 for the first 390 KWH (yes, less than a penny), then $0.102618 for the 1,100 KWH. The delivery charge is $0.035927 per KWH.

The overall average for the last NJ JCP&L bill cycle was $0.102618 for energy + $0.035927 for delivery == $0.138545 overall, lets call it $0.14 per KWH.

I'm not disputing your observation, just saying that with some shopping, you can probably do better!




Neither i3 nor Model 3 (nor any other EV) use 100% of their battery.
i3 uses 27.2 or 33 KWH battery, or 82% of listed.
There is no explicit ratio listed by Tesla, so I would just assume something similar.

BTW, premium gas has not been below $3.xx / gallon for a while on the East coast, above $4.xx on the West coast.
https://gasprices.aaa.com/




There is something wrong with your math (implied EV MPG makes no sense).
I've corrected a few other data inputs in your analysis (see table below), but the bottom line is this: I drive ~300 miles/week in a car.
TM3 would cost me almost 1 full battery charge (325 mile range), or $7.95. My BMW M3 costs me 16 gallons of premium, or $48.80.

That's 6x difference.
Annually, that's the difference between $2,538 (M3) vs. $413 (TM3).

To break even between the two, I would need an ICE car with 6x mileage of my M3's daily average mileage of ~19 mpg (more on highway, less on track).

That would be a 114 mpg ICE car.
I haven't heard of any that approach that.

a

P.S.: Updated table, formatting likely to be butchered:

_______________BMW i3_____Tesla Model 3 LR_____BMW M3_____$ ICE/EV
Battery - KW__________33____________75 -
% usable_____________82%__________82%
Battery usable, KW_____27.06__________61.50
Electricity Cost per KW__$0.14__________$0.14
Battery Charge Cost____$3.79__________$8.61
Range_______________114____________325
M3 daily MPG___________________________________18.75
Per gallon cost, premium__________________________$3.05
Cost Per Mile__________$0.0332_____$0.0265________$0.16____ _6.14


Weekly driving_____300_____300_____300
Weekly:____________________$7.95_____$48.80
Annually:___________________$413_____$2,538_____6. 14