I agree, the Volt's displayed range aka Guess-O-Meter is pretty accurate. But it can quickly change based on any change in driving routine. And as any EV owner will attest, cold weather and heating the cabin will suck the life err range out of your battery.Based on all answers to this point - no one knows how they calculate projected range. But I feel they are doing better at projecting the future than most other manufacturers.
Just enjoy the Volt and don't worry too much about the numbers.
VIN # B0985