Welcome back to Part 2 of my 3-part retrospective on approaching 50,000 miles in our 2023 Tesla Model Y. In Part 1, I covered rationing our final 137.2 warranty miles before a $500 inspection and the painful rev-lag of driving our Honda Odyssey all week; today, we are digging into my Home Assistant and TeslaMate telemetry before Part 3 wraps up with Full Self-Driving, Elon Musk, and whether I would buy another Tesla right now. I am pretty sure I will have more to say about this after the inspection is done, but as I'm trying this format of writing a bunch of posts and scheduling them to be published, I haven't dropped it of yet, so tune back in next week for that part.
Anyway... back in August 2023 (at 1,014.5 miles), I spun up TeslaMate alongside Home Assistant to log every drive locally. There is a side quest there about the drama around the original developer of TeslaMate leaving the project and having to spin up a separate docker container and database to host it outside of home assistant; however, I'm not getting into that here (maybe that will be a future topic). So, across 6,838 drives and 48,848 tracked miles, I collected some data!
In that time, the car pulled 20,833.4 kWh from the wall (18,546.0 kWh into the battery after 11% charging overhead), averaging 427 Wh/mi wall-to-wheel (380 Wh/mi driving). Even after Puget Sound Energy raised rates from 13.88 cents to (15... 18...) 21.66 cents per kWh (the 3 biggest increases in electricity rates in their history!), our entire 3.5-year electricity total is $3,249.22; working out to 7.6 cents per mile at home (86.9% of our charging) and 8.4 cents per mile if you include the $849 spent at superchargers across the country. Battery degradation stayed boringly flat too, easing from 278.7 rated miles new to around 260 to 266.8 miles today (just 4.3% to 6.5% loss).
Meanwhile, our 2018 Honda Odyssey usage completely collapsed. Before the Tesla arrived, the Odyssey averaged 1,068 miles per month at 19.3 MPG (costing 22 to 23.9 cents per mile). Once the Model Y took over at 1,289 miles per month, the minivan dropped 74% to just 276 miles per month. Driving those Tesla miles in the Odyssey would have burned 2,531 gallons for $11,023.14 - meaning the Model Y saved us $7,233.60 in fuel and kept 22.4 metric tons of CO2 out of the air (even more if you add in the costs for oil changes).
In the winter, the Model Y AWD is a beast in the snow. We logged 30 ski trips (4,390 miles) up to Stevens Pass down to 13.9 F without needing a Supercharger on a full home charge. Around 35,000 miles, we swapped the factory tires (Pirelli Scorpion MS) at Costco for EV-optimized tires (Bridgestone Turanza EV) before ski season; they are quieter than both the factory tires and the Odyssey's tires (Michelin CrossClimate2), though the Bridgestone tires seem to have traded away about 14% in range (moving winter consumption from 404 Wh/mi to 467 Wh/mi).
For longer trips, we can drive non-stop from Seattle to Vancouver, BC on a 100% charge and arrive with nearly 42% left. Enough to get us around Vancouver for the day before topping off at one of the local superchargers (those BC superchargers are even cheaper than charging at home FYI). Last summer, when a ferry issue forced us south through Olympia and Aberdeen to camp at Bogachiel State Park (575 miles with a roof rack and ski box full of camp gear and four bikes on the hitch rack), I plugged into the Forks Supercharger past midnight while the kids slept; recharging from 27% to 78% and decompressing before pitching the tent at 1:00 AM (while a shorter 337-mile Fort Flagler camping trip only needed a very short public charging stop to top off). Even the scary 12V battery error we saw in Worthington, Minnesota during our 5,531-mile winter trip to Michigan was just a quirk from using a bad CCS charging adapter at a third-party station... and Lynnwood Tesla Service checked on it and found nothing wrong, but gave me a Model S loaner overnight.
The telemetry is hard to argue with; gas cars can't even compete. I have also found most of the fear mongering is just plain false (waiting forever to charge, eating tires, range anxiety - which we did have that with Renmin's old Nissan Leaf 12 years ago - all that is just noise now.) Even the Insurance issue, which was a real problem when we first got our Tesla (Progressive doubled our insurance twice!) but now we found out that some insurance companies were just milking the hype to make a quick buck - we pay the same rate now we did before the Tesla.
So, I'm pretty sure I went way over 500 words here. So tune in next week for Part 3, we need to talk about Elon Musk's software changes, Full Self-Driving's personality quirks, and my final buying verdict.
Later,
SteveO





