The answer to your question is complex. I have owned my Volt for almost 7 months and have almost 7000 miles logged in central Florida. The mileage I get depends upon the weather (degrades when it is cooler (<45 degrees), improves a bit when you can keep the AC off), where I drive (highway (not as good) or <60 mph), and how aggressively I drive. I have achieved as much as 48 miles and as little as 36 miles on a charge. BTW, neither is too shabby for about 10 kWh of electricity which costs me about $1.40. When the gas generator kicks on, I routinely get between 38-42 mpg - I think the only variable is aggressiveness, but I'm not entirely sure. Since you will drive 84 miles per commute, plan on 5 to 8 gallons per week. If your experience is anything like mine, in a worse case scenario that will still be close to 50 mpg. And, by the way there is no car out there getting close to 50 mpg that is even half as much fun to drive as a Volt. Once you've gone electric, you won't want to go back! When you test drive the Volt, be sure to try driving in 1) Normal Mode, 2) Sports Mode, 3) L gear and 4) Sports Mode & L Gear. You see the Volt is really FOUR different driving experiences built into one vehicle. And all of them outclass the BMW 740iL my Volt replaced. OK, the BMW could cruise at 110 mph, at the Volt can't, but who cares! I'm a much safer driver these days too thanks to the Volt.
Last edited by cbono; 06-05-2012 at 01:33 PM.