cr08...
"1) Never drive in Auto/EV Now mode above ~50mph or so. Switch to EV Later.
2) Never use Auto/EV Now on the highway/freeway. Switch to EV Later.
3) In the winter if it is extremely cold and you use cabin heat, you may wish to start in EV Later and let the ICE do the bulk of the work to heat up the car. Once the coolant temp gets high enough that you see the climate use drop to 0, then you can drop back to Auto. You may even want to wait until the cabin reaches temp and the HVAC fan slows. The heaviest load on the battery from the climate system is trying to warm the coolant from low ambient temps. Once the ICE has done most of the work, just maintaining the coolant temp on battery is a low enough load to not be a huge issue.
4) In hotter weather especially if you live in a hotter climate like Arizona or South Florida, monitoring the battery temp is crucial. The battery is air cooled and even then it does a piss poor job at it. Even with the A/C going full blast, it makes little change in the battery temp. Once the battery temp gets above 90 or 100f, EV Later/hybrid mode should be used. The vehicle won't give you the battery temp by default, you'll need an aftermarket tool to view this either in the form of something like a ScanGauge or using a mobile app like Torque or ForScan with a cheap Bluetooth OBD dongle."
Seems that EV Later is the mode to stay in the majority of the time....:)