I’ve only done 750 miles in HV but I always beat the EPA range on all my trips (80s-09s F, no passengers, 65-75 mph, ac on). I start out in HV with a full tank and battery, and only lose 2 bars on the battery gauge in 250 miles. I consistently get 50-51 mpg (by gas pump receipts) or 49-50 mpg after accounting for the small amount needed to charge the battery back up to full. And that’s on a round trip that accounts for changes in altitude. So for me, it’s quite reasonable to drive 340 miles before looking for cheap gas while still having a 50 mile reserve of battery and last bit of gas. Since I try not to use EV on a long trip and since my bladder in no longer a teenager, I stop for both of us way before that point.
Of course, speed, loads, climbs, and temperature (especially cold batteries and heater use) will naturally reduce the best case scenario and will need to be planned for. In the winter, I know my ranges will be reduced, but I don’t have enough real world experience to know how much lower, so I’ll just keep an eye on the HV range estimate and refuel when it gets to 50 miles left.
And yes, count me in the camp that advocates starting in HV and a full (or at least significant) SOC which IMHO allows the algorithm the most freedom to switch between driving modes to provide the best economy, power, and driving experience. And subsequently, I’ve never heard the high reving “angry bees” even on steep hill climbs.
Now if I could just remember to always put it back into HV after each stop! (May have to make an HV note like
@insightman uses on the drive button)