I understand that the EPA updated their Wh/mi rating for the Model Y in 2024--and as a result, Tesla reduced the range they list on their website from 330 to 310.
I'm trying to figure out what that Wh/mi is, and what Tesla's Wh/mi rating is (if they have a different number--I'm unclear on that as well).
When I look at the energy consumption graph in my vehicle, the "rated" line looks to me like it's at about 270 Wh/mi. This is curious to me because the 2023 EPA rating appears to be 280 Wh/mi:
28 kWh/100 mi = 280 Wh/mi
2024 numbers aren't available for a Tesla Model Y on the FuelEconomy.gov site as of today.
I would expect the rated Wh/mi to go up if we saw a decrease in EPA range, but I'm pretty confident that the line I'm seeing in the vehicle is less than 280 Wh/mi (and not more).
I've got a TeslaFi subscription, and they are running their calculations based on roughly 248 Wh/mi. For example:
If 252 Wh/mi is 98.3% efficiency, then 100% efficiency would be 248 Wh/mi (rounding to three significant figures).
My real world efficiency is around 270 Wh/mi, which I know is what really matters--still, I am curious what the EPA rating is and (if different) what Tesla's rating is. Is this published anywhere?
I'm trying to figure out what that Wh/mi is, and what Tesla's Wh/mi rating is (if they have a different number--I'm unclear on that as well).
When I look at the energy consumption graph in my vehicle, the "rated" line looks to me like it's at about 270 Wh/mi. This is curious to me because the 2023 EPA rating appears to be 280 Wh/mi:
28 kWh/100 mi = 280 Wh/mi
2024 numbers aren't available for a Tesla Model Y on the FuelEconomy.gov site as of today.
I would expect the rated Wh/mi to go up if we saw a decrease in EPA range, but I'm pretty confident that the line I'm seeing in the vehicle is less than 280 Wh/mi (and not more).
I've got a TeslaFi subscription, and they are running their calculations based on roughly 248 Wh/mi. For example:
If 252 Wh/mi is 98.3% efficiency, then 100% efficiency would be 248 Wh/mi (rounding to three significant figures).
My real world efficiency is around 270 Wh/mi, which I know is what really matters--still, I am curious what the EPA rating is and (if different) what Tesla's rating is. Is this published anywhere?
Last edited: