I bought a new Model Y and have been driving it for a few weeks. According to the car, I've consumed about 185 Wh/km over the entire time. However, if I go with the Tesla App's charging stats, it actually works out to 279 Wh/km. If I consider energy as charged rather than as delivered, it's 317 Wh.
My guess is that the extra consumption is from preconditioning, occasional sentry mode, and other vampire losses while parked. It seems that Tesla is not counting consumption when parked, and the app is also not showing charging losses. There really should be an option to see this, since I pay for electricity consumed, not the electricity actually delivered to the car.
Anyway, even with that I'm still paying about 5x less than I would for gas in my previous car.
Has anyone ever done comparisons like this for other cars too? It would be interesting to know the "true" consumption between different models, especially for those living where electricity may be a lot more expensive.
My guess is that the extra consumption is from preconditioning, occasional sentry mode, and other vampire losses while parked. It seems that Tesla is not counting consumption when parked, and the app is also not showing charging losses. There really should be an option to see this, since I pay for electricity consumed, not the electricity actually delivered to the car.
Anyway, even with that I'm still paying about 5x less than I would for gas in my previous car.
Has anyone ever done comparisons like this for other cars too? It would be interesting to know the "true" consumption between different models, especially for those living where electricity may be a lot more expensive.