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Is the EV range display just a guess based on temperature?

4086 Views 15 Replies 12 Participants Last post by  hellsop
What determines the EV range that is displayed? Is it just a guess based on the temperature or is it somehow constantly adjusting based on driving habits, temperature, etc.?

When I got my car in October the EV range went as high as 57 miles while it was in the 60s and 70s outside. Yesterday I ran the car to 0 EV range and drove on the ICE so the battery got a full recharge last night. Today it's about 52 degrees outside and the car is only showing 40 miles EV range.

I'm wondering if this is just the car guessing based on the most recent conditions and after I drive it and recharge it today the range will actually increase... or is this the actual max range I will get right now? Is the car just assuming that I will use the heater, heated seats, drive a certain way, etc. and combining that with the air temperature to say 40 miles, so if I were to drive without the heater on I would get more?
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It's a quess by the computer based on your last drive or 2.
Exactly, and here's a good example of how the driving behavior comes into play: right now our weather is around 40F and my estimated range was around 65-68 (don't use HVAC much), but after 3 driving sessions by my wife and daughter that covered a total of about 70 miles (different driving style and they do use HVAC much), today I got in the car and the estimate had gone down to 55 (about 20% less) with the same outdoor temp.
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