So, we're at the 1 year mark in owning our first all electric vehicle. And I wanted to take some time to break down the math and see how well it worked out. I haven't actually crunched the numbers yet. And while I feel pretty good about the outcomes, only time will tell.
So, to start, here are my points of comparison:
Last ICE Vehicle - Hyundai Santa Fe.
- Averaged ~9L/100KM
- Average maintenance costs for us ($600-800/yr)
Last Vehicle - Kia Niro PHEV.
- Averaged ~6.4L/100KM on trips which exceeded battery range
- Plus a tank of gas probably every 3 months in winter for heating (no heat pump on this car).
- Typical maintenance costs. ($600-800yr)
Current car- Kia Niro EV
- Averaged 17KWH/100KM (combined winter and summer and highway and city driving)
- Maintenance during 1st year $0.
This year we put about 12K KMs on the car. This included 3 longer trips during the year:
- 1200KM -> Niagara Falls
- 2x900KM -> Tire changes
- Which leaves 9000KM local driving
For longer trips we leave with a full battery and pull back home around 100KM. Given most of these trips were in colder weather we'll say that 400KM on each trip was charged on the home charger. So, that bumps us up to 10200KM on the home charger.
The rest would have been a mix of faster chargers. Some free, others various prices. For the sake of simplicity we'll say that everywhere charged us $0.65/KWH. This is probably equal to the most expensive rate we've paid, so it should be pretty fair.
So, let's roll with the calculations. The Niagara Falls trip would have been about 800KM of travelling on paid public charging. With my average rate of 17KWH/100KM we get 136KWH @ $0.65 = $88.40. From memory... this seems fairly accurate. I think we probably paid in the high $60's if I recall, but I am rounding up to keep things fair.
In the PHEV, the all battery range was just 41KM. I'm not even going to bother counting it for trips like this. We'll just assume that the whole 1200KM would have been on hybrid mode (actually would have been because of the temperature anyway). So, the trip would have taken roughly 76.8L. And if we assume a rather fair rate of $1.40L we get $107.52. And lastly, the Santa Fe would have needed 108L and would have cost $151.20.
All in all, the gap does favour the EV. But, I wouldn't call it wide by any means.
Next, we'll look at the annual and monthly cost of the more regular, day-to-day driving. There, I charge at home, overnight at about $0.08/KWH. For the EV, that is 1734KWH of charge, which is $138.72....
... and I think you can see where the math starts to fall apart for the other cars. My annual day-to-day driving cost less than 1 long trip in the Santa Fe. But lets continue. The Santa Fe here would be $1285.20 year. The PHEV here is a bit harder to peg because there were conditions under which is used gas even if the car had battery and we couldn't cover all of our local driving all of the time in the battery range. I'm gonna say that if we subtracted road trips we would probably use 2 tanks of gas a year for 70L for $98.00, but that this would have only covered maybe 200KM of driving with the rest lost to heating in winter. This car wasn't forthcoming about EV economy, so we'll just assume it had the same efficiency as the EV which would cost us about $136.00 for the remaining 10k KMs for a total of $234.60/yr.
For the 2 shorter trips we get. Santa Fe @ $113.40, PHEV @ $80.64 and the EV @ $55.25.
My maintenance costs listed were for the service #1 and 2 for each car, which had 2 services a year. Those are the cheaper ones and the fairest comparison. We'll call it $700 to give them back some advantage.
Now onto final numbers.
Everything, all in for:
- Santa Fe: 151.20 + 113.40 + 1285.20 + 700 = $2249.80
- PHEV: 107.52 + 80.64 + 234.60 + 700 = $1122.76
- EV: 88.40 + 55.25 + 138.72 + 0 = $282.37
Now... why bother with these? To get a sense of whether or not the monthly payments were worth it. The delta here is only about $80/month vs the PHEV, but closer to $180/month compared to the ICE. All in all, I think we did good. We probably broke even on the upgrade to the EV from the PHEV, but we killed it on the upgrade from the Santa Fe.
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