Despite the fact that the 230 mpg rating will likely stand (once GM gets a final-production Volt into the hands of the EPA, that is), so much attention has been paid to the matter that the good in charge at Progressive's Automotive X PRIZE decided it was time to chime in, asking "Is MPG still relevant?"
MPGe is what the AXP calls "the system of merit" that AXP competitors will be measured against, and - if the AXP gets their way and the EPA adopts their point of view - it just might become the new consumer standard!
If you're curious how your own hybrid, flex-fuel, or electric vehicle "stacks up" in terms of MPGe, there is a lengthy explanation of how MPGe is calculated at the AXP site … but that's no fun. This easy-to-use and simple-to-understand spreadsheet, however, certainly is! (Windows users, don't forget to scan the file!)
Simply type in the relative numbers and calculate YOUR MPGe - leave the results in the comments, below, and maybe I'll send a cookie to whoever posts the highest numbers.
Haase- While I and the EPA applaud GM's mpg goal in their claim... numbers should not be skewed to market $40,000 disposable consumer cars.
Sustainability is based on cradle to grave manufacturing, energy consumption and end of use life cycle. Or a "dust to dust analysis". It is why the EPA works so hard to validate and confirm data sets. MPGe is an excellent suggestion for the EPA and markets to review and I am sure someone there is ;-)
