Looking at the epa website, I find myself wondering how they do their tests. According to them, the only difference in gas milage between the V5 and the V8 is one mpg. Can that be remotely correct?
V8:
http://www.fueleconomy.gov/feg/noframes/24659.shtml
V5:
http://www.fueleconomy.gov/feg/noframes/24658.shtml