As a fan of maths, data and Excel, I bought a Tessie subscription. After connecting the app to my Tesla account and the car, I have access to tons of statistics about the car. I recommend it to every Tesla owner for whom those ten-something dollars a month are a sensible investment – charts, data and full analysis at your fingertips.
What does Tessie give me?
Basic information about the state of the car: charge level, temperatures, tyre condition and the vehicle's current location. In the app I can check with one click where I can get to on my current charge level, based on my average energy consumption.
For example, with the charge at 82%, I can make it to Kraków, Bydgoszcz, to just outside Katowice (literally – 3 km short of the city limits) or to Elbląg. I'm wondering whether, with Tessie, I even need ABRP (A Better Route Planner). Of course the calculations assume driving down to zero, and in reality I don't go below 10%, but since I like planning, I can always plan a charging stop and have a good meal while I'm at it. 😊
Energy consumption and more data
In the month since picking up the car we've already used 884 kWh (a word of caution here, this figure comes out of nowhere, I don't know where Tessie sometimes gets this data from, the total from chargers is about 650, from driving 590). The app also lets you trigger certain actions in the car, but since our car is parked in the garage (which resembles a bunker, so the signal doesn't always get through), we don't make full use of these options.
It's also cool to look back at the history of the last 7 days – routes, consumption, charge level, as well as the places where Sentry mode was activated. Tessie records our trips, showing energy consumption and route efficiency. You can also compare trip costs with a combustion car. In theory, 100% efficiency is the manufacturer's figure of 14 kWh/100 km, but with fuel prices and the consumption of our Octavia (1.5 TSi mhev), an efficiency of 68% works out financially the same as a trip in the Tesla.
Tracking charging sessions and energy costs
Tessie also lets you track charging sessions – Superchargers automatically add the exact price, and for other stations you can set location-based prices or edit them after charging to match the receipt. That's handy, because the app converts energy costs into a projected fuel cost. So far we've spent 1,362 PLN on electricity, while the equivalent fuel cost would have been 1,797 PLN.
Automations and battery health
The app also has automations and battery health information, but their accuracy depends on a full charge to 100%. We haven't done that yet, so the values are approximate. At the moment Tessie shows degradation of 0.15% – which corresponds to losing about 600–700 metres of range after driving almost 4,000 km.
That's it for Tessie! I love statistical fun like this, but I know not everyone does (greetings, dear friend, if you ever read this 😉).