Share Your Success: 40+ miles EV on a Charge

Mine seems to be going up 1 mile per charge recently - charged yesterday - 26. Charged today after going out for a bit - 27. Eventually maybe it'll get up there!

 

Old thread revival.

My prime is new, so it's giving me ~25miles. If I nurse it like you all, and I get better mileage, will it slowly assume I can get better mileage and adjust appropriately?
ie: does it average all the previous trips when it figures out how far it thinks it can go?

 

GOM (Guess-O-Meter) EV range is a just estimate from your previous EV drives (only EV drive will count not an EV portion of HV mode) miles/kWh and some other factors like use of AC and weather. You can make it go up but that may not be a true EV range you can get. @PiPLosAngeles has had 50 miles EV range on GOM nailed for a long time. The GOM upper limit is 50 miles, just like 99miles/kWh and 999mpg (199mpg for 2017models) are the highest numbers car will display.

You maybe interested in reading or commenting on this thread. Any one else getting more than 30 per charge? | Page 27 | PriusChat
The record contiguous EV only distance driven has been 48.2miles by @Prius from Dad.

This thread may also be of interest. What is your miles/kWh (total average electricity consumption) on the "Drive Monitor 2" | PriusChat We discussed in length how to improve the EV efficiency (higher miles/kWh) to extend the range. My current DM2 is 21.7miles/kWh, but the GOM is only 31.0miles.

 

That's pretty good. Beats anything I have other than the first 10 miles of my commute which has a lot of downhill spots.

I wonder if the meter is counting regeneration? In other words, is it the net electricity use or the gross used for the numerator? I hope it's gross, but who knows?

 

I am pretty sure it's net electricity that is number used for the numerator is kWh stored in the battery plus kWh regenerated. Yeah, that's why DM2 number is not a very good indication of true EV efficiency for PHV. I am basically using the gasoline engine to generate electricity to drive on EV.

 

Why would the ICE generate electricity in HV mode, other than the initial warm up cycle? I've never had it do that. Either way, how's that different than an EV drive where you generate electricity from regen?

 

In order to achieve the 20+ miles/kWh on DM2, I am using HV mode more frequently to conserve the traction battery SoC. The way I am driving now, I use HV mode with the engine burning gasoline to climb up the hill, then on the descent, I switch to EV to capture regenerated electricity. This regen energy is coming from the gasoline engine energy to bring the car to the top of the hill, akin to using CHG mode. The difference is that If you use the EV mode to climb the hill and get back the regen energy, DM2 will record the use of SoC on uphill and gain of SoC on the downhill resulting in close to zero gain or slightly more on minus side, whereas if you use HV mode to climb up the hill there is no use of traction battery, so DM2 and daily miles/kWh number will increase.

 

That assumes there is regen. My commute involves almost none (other than incidental amounts at red lights, etc.). When hypermiling I consider regen not in connection with going downhill a failure on my part. It means I wasted power/gas accelerating when I shouldn't have.

 

My usual commute route ~40miles round trip has enough up and down. If I use just EV to drive the entire route, the best I can get is 5-6miles/kWh >199mpg in summer and 3-4miles/kWh ~65mpg in winter, but this is the most expensive way to drive. At the current cost of gasoline and electricity, pure EV drive cost ~40% more than HV. If I mix EV and HV and try to maximize both miles/kWh and mpg, I can get 8-9miles/kWh and much better mpg than driving pure HV.

However, since mid-March, only a few weeks after I purchased my new 2020 PRIME, I have not been driving much. At one point the gas price got so low, that pure EV drive was costing 80% more at EPA rated ~4.6miles/kWh than pure HV drive at 53mpg. So I started experimenting with how far I can conserve the use of electricity and still get reasonable mpg that is cost-effective. Like I said, at 20+miles/kWh, I am using gasoline to generate electricity, and this is not likely the most economical nor ecological way to drive. But for once a week ~40miles drive, it is not much waste (either money or gas/electricity). I have not filled the tank since mid-March and charged the traction battery with total of only ~80kWh from the wall during that period. I will likely to adjust back to 8-9miles/kWh EV efficiency once I am back to everyday driving... That is if I ever go back to that routine. Not likely it will happen this year.

 

On the drive home from a long day at work: