Fantastic Prime Mileage

I'm not arguing 7 kWh is not too high (or low).
I'm just saying I didn't use 100% of 8.8 kWh to get my miles/kWh as my equation in my first thread clearly shows.

 

I did a "full" charge this morning. EV range was used up and then I went about another 1/2 mile at 20-25 mph on battery. My wall meter read 6.125 kWh. That, of course includes all the overhead of fans and heat loss.

 

I will be doing a "full" charge tonight. Just to see what kind of daily commuting mpg I get if I do continuous EV mode drive, I drove all the way into work ~18miles on EV mode at ambient temp 16F-32F with heat on (but at minimal). Ambient temp stayed high enough, and the gas engine did not fire up. But as I suspected, the car used most of SOC. Only 4% SOC, 2.1 miles EV range left in the car. I will definitely use up that amount on my way home this afternoon. I will report the full charge kWh tomorrow.

Yeah, fantastic mpg... All EV 18 miles. 199.9mpg. BUT, very low miles/kWh on EV only at 3.2miles/kWh. And with minimal heat from the heat pump, the cabin temp was at 33F after 30 min of driving (temp was set at 70F), just 1F higher than the ambient temp at finish.

 

What is wrong with your heat pump? Mine gets from 30 to 70 in around 10 minutes.

 

Have you ever measured the cabin temp by a thermometer? I keep a small thermometer/hygrometer on my front console all the time to monitor the cabin temp. What you feel like comfortable temp is not actually the temp you have set on the climate control. I don't know where the PRIME internal cabin temperature sensor is located, but I have never gotten the cabin temp rise from 30 to 70F in 10 minutes, with heat pump or without (i.e. using gas engine). That said, for today's run I started commute at 16F ambient temp and sat the climate control at minimal by manually setting at fan speed 2. Probably got bit warmer if I had it on AUTO or blasted with fan.

 

Yes.

I'm guessing that thing has really slow response time. Most do. I'm using an infrared thermometer, so instant response.

 

I don't think so. It may not as instant as infrared, but response time is less than a minute. If I take the thermometer from outside 16F to inside the house 62F, it will raise to 62 F within a minute.

 

Well, I don't know what to tell you. I live in Colorado and drive to work all winter in cold temperatures. It's a 15-17 minute drive and the car is up to the setpoint around half way to work.

 

Set temp has very little meaning to me. I just want the cabin temperature to be comfortable temperate to me. At least I have not seen the actual cabin temp reach the set temp by heating or cooling monitored on a thermometer at the front console most of times. I am quite comfortable at 32F cabin temperature. Thing is if I used gas engine to heat the cabin I could have achieved this temperature much quicker than with a heat pump.

 

For me, the heat pump is faster because it starts producing heat almost immediately. The ICE will produce more heat once it's warm, but that takes a few minutes, and around 10 minutes before the crossover.

 

I don't know why the differences. I do not like the heat pump performance and the cost factor for heating in my climate and local. Good thing is for most part of winter I can not use the heat pump as sole source of heating for my car anyway. Today was exception in that morning temp was warm enough to use heat pump. It works extremely well for cooling in my use case. I have read in other threads people who has similar review as I do in terms of heating in colder climate. But I also have seen other like you who praises the heat pump performance and efficiency. Not me.

 

Just reporting back on the "full-charge" last night. Yesterday, I drove all the way to the work ~18 miles on EV mode. I had only 4% SOC left on my way home. I use it up within the first few miles, then drove HV rest of the way home. At home, with EV range zero miles, Hybrid Assistant was reading my real SOC to be 12.16%, which is very close to what I always get on zero EV mile SOC. Plugged in the car and scheduled to charge overnight. This morning, the Kill-a-Watt meter read 6.54kWh from the wall for the full charge by OEM L1 charger. The Hybrid Assistant reads 83.94% SOC which is also very consistent with what I have been getting on a full charge SOC.

 

BTW, for yesterdays full depletion of EV SOC from 100% to 0% (corresponding to 83.94% to 12.16% real SOC), I drove 18.9 miles on pure EV mode and my daily record was showing 3.4 miles/kWh. This means the battery energy used for 100%-0% EV SOC is 18.9/3.4=5.56kWh.

This number is consistent with what has been reported by others as well as my own observation over 2.5 years.

 

How is everyone gettin such high numbers?? I average 3.4 so far when on pure EV though I did reset a month ago. Maybe not the best season to do that? (Indiana weather) I don’t baby it but I do get good scores on the indicator when I look at it. I’m not too concerned as I came from a 17mpg 4Runner, but still lol.


iPhone ?

 

My average is 5.0 miles/kWh. It's more like 3.6 in the winter and 5.8 in the summer.

 

If that is only for last month or two, then it's a good number for cold climate. My winter miles/kWh normal driving is about that. Summer time gets much better. But if you drive at higher speed and use a lot of heat, you can have even lower than 3.4 easily. The photo below is from last year, when I was just driving EV until it goes to zero.

 

It's mostly a combination of outside temperature and vehicle speed. Traffic conditions, climate control, and driving style are also major factors, but they can be controlled to some extent.