Mike's wife's monthly Kona EV efficiency report

[navguy12]

Sep 2021 results:









Summary costs as of 03 Oct 2021:



Total operating costs, per km (total costs minus capex costs):

$7.3144 - $6.7620 = $0.5524/km

Discussion:

The bump in operating costs this month is due to the annual (one payment) insurance cost plus two years worth of license plate renewal (i.e. the plate "stickers").

 

[navguy12]

Oct 2021 results:









Summary costs as of 31 Oct 2021:


Total operating costs, per km (total costs minus capex costs):

$6.9070 - $6.3836 = $0.5234/km

 

[navguy12]

Nov 2021 results (note: my wife had a shoulder replaced early in the month, thus the distance driven in November has been very limited):









Summary costs as of 30 Nov 2021:


Total operating costs, per km (total costs minus capex costs):

$6.8388 - $6.3196 = $0.5192/km

 

[Lars]

Nov 2021 results (note: my wife had a shoulder replaced early in the month, thus the distance driven in November has been very limited):

View attachment 14242

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Summary costs as of 30 Nov 2021:

View attachment 14244
Total operating costs, per km (total costs minus capex costs):

$6.8388 - $6.3196 = $0.5192/km

I calculate ~ $0.02/km for electricity only for November - this far. No DCFC charger used and charged at the lowest TOU rate in Ontario.

 

[navguy12]

I calculate ~ $0.02/km for electricity only for November - this far. No DCFC charger used and charged at the lowest TOU rate in Ontario.

My situation is closer to $CAD 0.03/km.

The 15 kWh drawn from the grid for November cost us $2.53, so that $2.53 spread over the 86.3 km travelled is 2.9 cents per km.

We used to be on TOU but have switched to the tiered rate about 10 months ago, as I find the record keeping much simpler.

Since we still only use our chargers (and central air) between 1900 and 0700, the Hydro One Networks online calculator (that a customer can use to apply to the latest invoice to see which option works best) always shows our overall bill would be “a wash” (always within two bucks either way) when comparing TOU and tiered rates.

For November, our cost worked out to $CAD 0.1686 (17 cents) per kWh (invoice $ total divided by invoice kWh used total) “including all taxes, fees and surcharges”.

 

[Lars]

My situation is closer to $CAD 0.03/km.

The 15 kWh drawn from the grid for November cost us $2.53, so that $2.53 spread over the 86.3 km travelled is 2.9 cents per km.

We used to be on TOU but have switched to the tiered rate about 10 months ago, as I find the record keeping much simpler.

Since we still only use our chargers (and central air) between 1900 and 0700, the Hydro One Networks online calculator (that a customer can use to apply to the latest invoice to see which option works best) always shows our overall bill would be “a wash” (always within two bucks either way) when comparing TOU and tiered rates.

For November, our cost worked out to $CAD 0.1686 (17 cents) per kWh (invoice $ total divided by invoice kWh used total) “including all taxes, fees and surcharges”.

I compared my November bill using the calculator. Apparently I overpaid $CAD 2.48 on TOU. (About the cost of a cup of espresso. )

 

[navguy12]

Dec 2021 results:






Summary costs as of 31 Dec 2021:



Total operating costs, per km (total costs minus capex costs):

$6.7290 - $6.2101 = $0.5189/km

 

[Lars]

I am not a 'data nerd' like someone here .... - my wife would disagree though.

In any case I did a year end cost to drive analysis based on the data I collected. Here are the results.
1. In 2021 we drove 17,550km using our Kona Preferred.
Total cost of power (including DCFC use) was C$412.16 (2.35/100km)
2. Driving our former Prius - assuming 4litres/100km & gas at C$1.36/litre
the cost of gas would have been C$954.72
3. Doing the same analysis, for a car consuming 6l/100km (Corolla non-hybrid)
the cost of gas would have been C$1432.08.
4. For a car consuming 8l/100km (Average RAV4 non-hybrid)
the cost of gas would have been C$1909.44.
5. Compared to my hypothetical RAV4 we saved $1,497.28.
Other variables, like the average gas prices over the year at various locations will yield different results.
You can all do the math but saving $1,000 (Corolla) or $1,500 a year on fuel is huge! Stretch it to a 5 year ownership will buy your electric car, if not quite, definitely a PHEV.

To finish it up other costs, since we bought our Kona; Set of all year Nokian WRG4 tires $1,100; Grizzl-E charger $524.60; touch-up paint $16.95 and a discounted #1 service call $63.22.

The average power consumption over 9298km is 14.5kWh/100km (it was reset at some point by accident). With winter weather it is climbed from 14.4 lately.

 

[navguy12]

I am not a 'data nerd' like someone here .... - my wide would disagree though.

In any case I did a year end cost to drive analysis based on the data I collected. Here are the results.
1. In 2021 we drove 17,750km using our Kona Preferred.
Total cost of power (including DCFC use) was C$412.16 (2.35/100km)
2. Driving our former Prius - assuming 4litres/100km & gas at C$1.36/litre
the cost of gas would have been C$954.72
3. Doing the same analysis, for a car consuming 6l/100km (Corolla non-hybrid)
the cost of gas would have been C$1432.08.
4. For a car consuming 8l/100km (Average RAV4 non-hybrid)
the cost of gas would have been C$1909.44.
5. Compared to my hypothetical RAV4 we saved $1,497.28.
Other variables, like the average gas prices over the year at various locations will yield different results.
You can all do the math but saving $1,000 (Corolla) or $1,500 a year on fuel is huge! Stretch it to a 5 year ownership will buy your electric car, if not quite, definitely a PHEV.

To finish it up other costs, since we bought our Kona; Set of all year Nokian Tyres $1,100; Grizzl-E charger $524.60; touch-up paint $16.95 + discounted #1 service call $63.22.

My wife has been totally spoiled by plugging it in, at home, about three times a month…can’t put a price on “turning left to go home versus turning right and driving another 4km to a gas station…”

 

[Lars]

My wife has been totally spoiled by plugging it in, at home, about three times a month…can’t put a price on “turning left to go home versus turning right and driving another 4km to a gas station…”

Check my updates or the numbers will not work out!

 

[navguy12]

Check my updates or the numbers will not work out!

Dunno, just ran your numbers, math checks.

 

[navguy12]

Dunno, just ran your numbers, math checks.

Getting 4L/100 km “in real life over a whole 12 month period” in a Prius is pretty good.

 

[R P]

Getting 4L/100 km “in real life over a whole 12 month period” in a Prius is pretty good.

That's what I got in my Prius C, which was my previous car to the Kona. It was as good as 3.6 in the city, and was around 5.0 on the highway. Most of driving with that car was in the city.

Was actually a pretty good car for its mission (2nd car and primary car for around town). And I got a great trade-in value, 60% of what I paid, after 5 years of use and 95K kms. Never a problem and almost zero maintenance, just oil changes and tires. Was never a good business case for going to the Kona.., but we wanted a new car.

 

[Lars]

Getting 4L/100 km “in real life over a whole 12 month period” in a Prius is pretty good.

There were some assumptions, but I can assure you that my last Prius was pretty close to that in real life. In my experience with Toyota cars - had a few - they were always good to keep close to the mileage on the sticker.

Dunno, just ran your numbers, math checks.

The total kms driven were 17,550 not 17,750 as in my first note. But it did not involve the math. The $412.16 for power was correct. That was copied correctly from my spreadsheet.

 

[Lars]

I just checked the average price of a new car is about $40,000 in Canada. The money saved on fuel will pay the difference for a Kona EV. Of course it will not be a good fit for all users but .... a point is made.

Canada Talks EVs ZOOM webinar on Feb 1 at 7:30 EST will have Dr. Jeff Dahn, the 'battery professor' as the guest speaker. On his request this session will NOT be recorded so if interested you must sign on. Spread the word!

 

[navguy12]

There were some assumptions, but I can assure you that my last Prius was pretty close to that in real life. In my experience with Toyota cars - had a few - they were always good to keep close to the mileage on the sticker.


The total kms driven were 17,550 not 17,750 as in my first note. But it did not involve the math. The $412.16 for power was correct. That was copied correctly from my spreadsheet.

IIRC, my ten years with my 2008 Prius returned (a spreadsheet verified) 4.6L/100 km, but that was with “mild” hypermiling.

 

[Lars]

IIRC, my ten years with my 2008 Prius returned (a spreadsheet verified) 4.6L/100 km, but that was with “mild” hypermiling.

Correct. My 2008 Prius performed the same way. I am not a hypermiler but as you know the way the car is used (short/long trip mix), and the terrain (hills anywhere?) all make a difference. My second, 2016 Prius was a considerably better car with a close to the advertised 4l/100km 'petrol consumption'.

 

[navguy12]

Correct. My 2008 Prius performed the same way. I am not a hypermiler but as you know the way the car is used (short/long trip mix), and the terrain (hills anywhere?) all make a difference. My second, 2016 Prius was a considerably better car with a close to the advertised 4l/100km 'petrol consumption'.

When I do my EV show and tell, I boil everything down to the cost of the kWh used for the particular test ride I’m giving (using trip odometer information) versus how many litres of fuel one would get with the same amount of money.

That’s usually what makes the sale

 

[OzKona]

When I do my EV show and tell, I boil everything down to the cost of the kWh used for the particular test ride I’m giving (using trip odometer information) versus how many litres of fuel one would get with the same amount of money.

That’s usually what makes the sale

It's interesting to compare the energy consumption in kWh between BEV and comparable ICE cars.

Regular unleaded contains roughly 9kwh per litre. The vehicle that our Kona replaced was a Mazda 3, a comparable vehicle. The way we used our Mazda, it averaged 8l/100km, = 72kWh/100km. The Kona averages 13kWh/100km. In energy consumption the Kona is 5.5 times more efficient.

Translating that to daily fuel costs, in Australian fuel prices the Mazda would cost us about $12.40 per 100km. The Kona $2.60, nearly one fifth.

 

[navguy12]

It's interesting to compare the energy consumption in kWh between BEV and comparable ICE cars.

Regular unleaded contains roughly 9kwh per litre. The vehicle that our Kona replaced was a Mazda 3, a comparable vehicle. The way we used our Mazda, it averaged 8l/100km, = 72kWh/100km. The Kona averages 13kWh/100km. In energy consumption the Kona is 5.5 times more efficient.

Translating that to daily fuel costs, in Australian fuel prices the Mazda would cost us about $12.40 per 100km. The Kona $2.60, nearly one fifth.

Agreed.

Ramble:

And your example shows how “wrong” the argument is that says “do you know how much (many “quads*” of) energy is required to keep the economy going, there is no way we can get off fossils”.

*Quads: just a big number of British Thermal Units used in energy flowcharts such as this example:



All the above numbers are “quads”, but the thing to look at (transportation) is that only 5.09 quads worth of the energy in petroleum are turned into actual “energy services” (propelling a vehicle down a road) where 19.2 quads worth of energy in petroleum end up being wasted as “rejected energy” in the form of heat radiating from the large radiator found in a typical ICE.

Folks are constantly amazed when I tell them that my TM3 only holds the energy equivalent of about eight litres of gasoline.