Tag / ev

by Warren

Tesla App Charging Stats

A little over a month ago(ish), Tesla released an update to their phone app that included accumulated charging statistics. More than just tracking the charging data, Tesla structured the metrics to also give you an idea of how much you are saving by not filling up with regular gas. There’s no way to set the price of the gas, and the help page states:

Tesla has assumed a fuel economy of 28 miles per gallon for Model 3 and Model Y…

You can set the energy cost that your home charger is using. Since Austin Energy uses a tiered pricing schedule, I looked up my historical billing and set my cost to $0.11 kWh.

Today marks 31 days of having this data:

Looking back, I’d say this was a pretty typical month for us. Total mileage was ~771 miles. The February 19th spike on the bar chart was charging up to 100% for a quick trip to San Antonio. Otherwise the max charge level I keep is at 80-90%.

Pulling up my TeslaMate dashboards, and the “Cost per 100 mi” stat is showing 4.10. Multiplying that with the mileage of 771 comes out to 3161, or $31.61, which is within a gnat’s hair of the Total Spent metric in the screenshot above. I’m betting the app does some rounding and/or the data cut-off was slightly different from TeslaMate.

All in all, the new Charge Stats screen is a nice update that surfaces more of the data that we know is out there to be sliced and diced. It’s nice to know that I can quickly call this up for a glance rather than needing to refer to the TeslaMate dashboards.

And right now, in March 2022, that Gas Savings metric has got to be a huge boon to any Tesla owner.

by Warren

March 2022 EV Comparison Update

I went through and updated specs for these vehicles based on the model year 2022. I also updated the BMW offering from the i3 to the i4, and added the VW ID.4 to the list.

I wanted to also add pricing to the comparison, and then break that down by Price/mi. Not sure of the value there, but it can really show a wide difference. This is essentially saying “how expensive is it to drive this vehicle a mile”, excluding charging costs. (e.g. Tesla M3 is $156/mi, vs an Audi e-tron at $302/mi.)

Observations:

  • Tesla returns to the top in mi/kWh.
  • Given pricing, Chevy Bolt’s offer a compelling argument. (Recent issues notwithstanding…)
  • If you’ve been following the news, Rivian raised their pricing. Makes that already bottom-scraping mi/kWh metric even more hard to swallow.
  • Ranges are getting better when compared to last year, and technology is improving. Hopefully this will mean we’ll soon see more affordable models being offered in coming years.

Compiling and tracking these metrics is a fun pastime for me, but I can see that I need to start segmenting out this into vehicle class. Look for that to happen with the next post.

Any thoughts on what to change or improve on?