EV Math from the FP

Kinja'd!!! "ShrimpHappens, née WJalopy" (bakeshake)
05/21/2019 at 14:21 • Filed to: None

Kinja'd!!!0 Kinja'd!!! 5
Kinja'd!!!

Concerning the Audi E-Tron

around 54 miles of range in just 10 minutes

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163 miles of range in around 30 minutes

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$1.00 to plug in, plus $0.30 to $0.35 per minute on a charge

My first thought was to compare that with my wife’s ‘18 Outback:

Going with $0.30/minute, 54 miles of range is $4.00. Gas is currently $2.439/gal where I’m at, so 54 miles of range at 30mpg is $4.39. Then, 163 miles of range is $10 at the charger and $13.25 at the pump, with the same parameters.

Now obviously, my gas is a lot cheaper than big metro areas, and I assume charging at home is a lot cheaper than these Level 3 chargers the article talks about. I’m just kinda surprised that it’s not life-changingly cheaper for the EV. Obviously, the interior and luxury stuff blows an Outback out of the water, but the E-Tron is twice as expensive.

How about for my ‘04 Grand Cherokee that recommends premium? It gets 19mpg on the highway and premium is $3.239/gal here, so 54 miles of range is $9.21 and 163 miles is $27.79. Now there’s a big difference.

But my gas-loving Jeep is from a different era. What about a new Grand Cherokee 4x4 V6? It uses regular gas and is rated 25mpg highway, so $5.27 for 54 miles and $15.90 for 163. Not huge, but that’ll add up over time. It’s just that a Grand Cherokee Summit is $24k cheaper than the E-Tron.

Finally, let’s stay in-house. The article says the E-Tron is bigger than the Q5 and smaller than the Q7. The Q5 is 27mpg on premium; the Q7 is 25mpg also on premium. So that’s $6.48/$19.55 for the Q5 and $7.00/$21.11 for the Q7.

So if you’re comparing to something that uses premium fuel, you could cut your “gas” costs in half, even using these Level 3 chargers (again, charging at home is going to be cheaper still). But you can’t forget that the E-Tron is $21k more than a top-trim Q5 and $6k more than a top-trim Q7. I’m tempted to set up a spreadsheet to see how long it’d take to recoup that cost.


DISCUSSION (5)


Kinja'd!!! farscythe - makin da cawfee! > ShrimpHappens, née WJalopy
05/21/2019 at 15:16

Kinja'd!!!0

yeah but no vroom :(

its gonna be a while till i get over this issue

*wonders how much work it would be to mod a honda e to look it should*

Kinja'd!!!

see... im getting there

...... *not thinking about an ls swap at all*


Kinja'd!!! TheRealBicycleBuck > ShrimpHappens, née WJalopy
05/21/2019 at 15:24

Kinja'd!!!1

I did the spreadsheet about five years ago. The $10k premium hybrids commanded at the time took about 10 years to recoup.

The one thing missing in the calculations is the time value of money. It takes less than 10 minutes to fill up a gas tank from empty. Charging takes considerably longer even if you are charging at a “supercharger.” If the charging takes place at home overnight, then that cost might  be ignored. Otherwise, it shouldn’t be left out.


Kinja'd!!! ShrimpHappens, née WJalopy > TheRealBicycleBuck
05/21/2019 at 15:48

Kinja'd!!!2

I, too, have an old spreadsheet from looking at hybrid and diesel savings and the time to recoup. I resurrected it just now, and based on info from the EPA website and combined fuel economy ratings, it’d take 18.6 yrs to recoup versus the Q5 and 4.3 yrs versus the Q7.


Kinja'd!!! nermal > ShrimpHappens, née WJalopy
05/21/2019 at 16:00

Kinja'd!!!3

The pie-in-the-sky pipe dream is that you won’t need to use charging stations.

1) Buy EV

2) Install solar panels on roof

3) Charge EV at home using “free” solar power

Talking about cost savings in regard to $80k+ EVs is a waste anyways. If you really are a cheap bastard and concerned about lowest overall ownership cost as a priority , you’ll buy a 3 - 5 yr old Toyota Camry or Honda Accord for $15k and put 200k miles on it.

However, as a general rule people that can afford to spend $80k+ on a new car are usually busy earning the $$$ to pay for their car. The value of an EV is not “fuel” savings. It’s things like the way they drive, not having to go to a gas station, being able to use carpool lanes, or simply talking down on people that still drive gas cars with a smugly condescending attitude.


Kinja'd!!! Dr. Zoidberg - RIP Oppo > TheRealBicycleBuck
05/21/2019 at 17:16

Kinja'd!!!1

I did the same thing last year. I even cross-shopped a relatively inexpensive used hybrid AND calculated gas at $5.00/gallon for premium in case the next recession is anything similar to the previous one. I would still have to drive four times as many miles I do now per year, over the next five years just to break even.