Please pardon the thread revival, all. I've owned my MY20 for about 10 days now but haven't had the opportunity to drive farther than the battery range. But soon I will drive to the mountains and after reading this very helpful thread, I wanted to put my scenario past the great minds here and see what you think the optimal strategy is.
My priorities for the drive are twofold: 1. maintain enough SOC for the big climbs to have adequate acceleration to pass trucks. 2. reduce overall fuel consumption.
Here we go: from Berkeley, CA to Lake Tahoe is 203 miles.
- The first ~60 miles is freeway driving, but with frequent patches of stop-and-go traffic as you get through Bay Area rush hour.
- Then you have about 50 miles of flat, open freeway from Davis to the Sierra foothills where traffic generally averages 75-80mph.
- From Auburn to Donner Pass is the business: over 60 miles, you gain 7000 feet from the fertile Central Valley up to the crest of the Sierra Nevada at Donner Summit. Over that climb, your vertical gain is more like 9000 feet with 2000' of descending.
- From Donner Summit you descend 2000' to Truckee over 8ish miles and then take surface streets a few miles to your destination.
- At the end of the weekend, I'll reverse this and head home.
Here's a map: https://goo.gl/maps/ayJC2bkEgkbhPNVa6
You can change to bike directions to get a sense of the elevation profile.
After reading through the thread, it seems like the optimal sequence is this:
- Use EV Mode to keep the ICE off for the first mile from my house to the freeway.
- Then go into Normal mode and let the car manage itself until Davis.
- At that point, press Charge to refill the battery, hoping that it gets up to its highest possible charge before the big climb.
- Keep the car in Charge while climbing, except turning it off and using Regen during downhills (such as the big downhill at Emigrant Gap).
- Go back to normal mode at Donner Summit and let the car manage itself for the rest of the drive.
- assuming I can't charge while in Tahoe, drive around in Charge mode during the weekend to accumulate SOC for the climb back up Donner Summit on the way home.
- once headed back down the mountains, resume Normal mode for most of the drive home.
- hit Charge again when 10 or 20 miles from home to get enough SOC to take me the last mile in EV mode.
Does that sound right? Anyone have suggestions for further refinements on the plan? For instance, I imagine that I'll build up some decent SOC on the descent out of the mountains. Does it make more sense to preserve that charge for later by hitting Save?