Reply #6: DCKit is right [View All]

[kristopher]

And it is worth expanding. This is especially important for series drive hybrids like the Volt, not so much for the parallel drive hybrids like the Prius.

The average person drives about 30 miles a day. Let's say you do all of that driving plus a little more entirely on home provided battery electric, then use the back up gasoline powered generator for your driving over that average daily amount. If you total the miles driven over the course of a year and divide that by the amount of gasoline used, you'll probably be somewhere between 100-150mpg.

Of course that isn't a complete accounting of the money spent on fuel since it doesn't count the cost of electricity you get from the grid, which would probably run about $1 per day in this scenario.